2003 Tables: Incidence - 4.1 to 4.60 (PE)

Table 4.1A Numbers (in Thousands) of Persons Who First Used Marijuana in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	794	304	490	18.7	14.3	24.5
1966	785	268	517	19.4	11.9	23.5
1967	1,317	463	854	19.2	21.3	35.3
1968	1,961	757	1,204	18.8	34.2	50.6
1969	2,627	985	1,642	19.0	45.3	71.2
1970	2,858	1,306	1,551	18.6	60.0	71.0
1971	2,951	1,333	1,619	18.4	60.2	73.6
1972	3,134	1,666	1,468	18.3	76.5	63.0
1973	3,460	1,735	1,725	18.8	79.0	76.1
1974	3,275	1,912	1,363	18.5	89.7	58.3
1975	3,332	1,880	1,452	18.3	89.6	66.6
1976	3,236	1,943	1,292	18.4	97.1	59.8
1977	3,327	1,891	1,436	18.6	96.5	68.2
1978	3,225	1,925	1,300	18.4	101.1	66.5
1979	3,028	1,733	1,295	19.1	91.9	61.3
1980	2,555	1,565	990	18.5	83.8	50.6
1981	2,518	1,452	1,066	18.3	80.1	58.7
1982	2,412	1,404	1,008	19.4	78.3	47.7
1983	2,365	1,500	865	18.0	83.1	48.5
1984	2,123	1,379	745	17.9	78.4	40.6
1985	2,182	1,374	809	18.0	78.7	47.6
1986	2,046	1,258	788	17.6	73.5	48.5
1987	1,809	1,116	692	17.8	64.6	43.3
1988	1,695	1,087	608	17.8	64.7	38.1
1989	1,702	994	708	18.3	58.4	41.3
1990	1,505	825	680	18.8	47.2	38.2
1991	1,765	1,042	723	17.8	58.6	42.6
1992	2,013	1,159	854	17.5	63.8	53.5
1993	2,148	1,338	810	17.2	71.9	47.6
1994	2,464	1,616	848	16.8	86.2	51.9
1995	2,698	1,726	973	17.0	90.3	58.3
1996	2,448	1,590	857	16.9	82.6	51.9
1997	2,613	1,725	889	17.2	89.0	52.0
1998	2,519	1,702	816	17.0	86.3	50.8
1999	2,715	1,728	987	17.5	86.5	59.8
2000	2,862	1,966	896	16.9	98.2	56.1
2001	2,806	1,872	934	17.3	93.6	56.3
2002²	2,573	1,763	810	17.2	87.0	49.4
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.2A Numbers (in Thousands) of Persons Who First Used Cocaine in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	62	*	49	*	*	*
1966	35	*	27	*	*	*
1967	98	*	98	*	*	*
1968	185	67	118	19.2	2.9	5.0
1969	210	50	160	21.6	2.0	5.0
1970	288	85	204	18.9	3.7	8.0
1971	424	81	343	20.7	3.3	11.0
1972	433	111	322	19.5	4.5	10.8
1973	592	174	418	20.3	7.2	13.5
1974	885	202	683	21.7	8.3	18.1
1975	876	197	679	20.9	8.1	19.6
1976	1,026	212	813	21.2	8.9	24.3
1977	1,102	264	838	21.2	11.3	23.4
1978	1,329	237	1,092	21.3	10.4	31.7
1979	1,360	277	1,083	21.0	12.4	32.9
1980	1,562	296	1,266	22.4	13.6	33.0
1981	1,543	284	1,259	21.5	13.5	36.3
1982	1,502	299	1,203	22.0	14.3	32.7
1983	1,450	235	1,215	22.1	11.4	35.5
1984	1,363	267	1,097	22.1	13.1	30.8
1985	1,371	289	1,082	22.2	14.4	29.6
1986	1,264	231	1,033	23.2	11.7	28.3
1987	1,173	247	926	22.5	12.6	26.8
1988	1,147	166	982	23.1	8.6	28.3
1989	981	163	818	23.1	8.5	22.8
1990	942	195	748	23.5	10.4	19.7
1991	706	115	591	23.1	6.0	16.6
1992	781	166	615	24.5	8.3	14.3
1993	634	150	484	22.1	7.5	14.3
1994	662	151	511	22.6	6.9	14.4
1995	776	222	554	21.1	10.3	17.2
1996	880	272	608	21.9	12.3	18.4
1997	886	252	634	20.8	11.1	21.3
1998	926	278	648	20.8	12.0	20.9
1999	959	283	677	20.8	12.0	21.5
2000	1,019	309	709	20.9	12.8	22.4
2001	1,167	372	795	20.8	15.3	24.1
2002²	1,059	323	736	20.3	13.1	22.6
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.3A Numbers (in Thousands) of Persons Who First Used Crack in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	*	*	*	*	*	*
1969	*	*	*	*	*	*
1970	*	*	*	*	*	*
1971	*	*	*	*	*	*
1972	*	*	*	*	*	*
1973	32	*	*	*	*	*
1974	*	*	*	*	*	*
1975	*	*	*	*	*	*
1976	*	*	*	*	*	*
1977	50	*	33	18.0	*	1.0
1978	101	*	79	20.7	*	1.9
1979	86	*	77	22.1	*	1.9
1980	140	*	104	22.6	*	2.0
1981	151	*	135	23.2	*	3.2
1982	180	*	156	25.0	*	2.5
1983	174	22	152	24.0	1.0	2.7
1984	249	27	222	23.5	1.3	4.1
1985	399	46	354	25.2	2.2	6.8
1986	264	36	228	25.9	1.8	3.9
1987	284	40	244	23.4	2.0	5.5
1988	358	41	316	25.5	2.0	5.3
1989	396	10	386	25.2	0.5	7.5
1990	413	29	384	26.9	1.5	5.8
1991	376	37	339	26.7	1.9	5.4
1992	433	43	390	28.0	2.1	4.8
1993	383	42	342	28.8	2.0	4.8
1994	379	46	333	27.6	2.1	4.4
1995	430	49	382	27.3	2.2	6.3
1996	384	66	318	25.8	2.9	5.2
1997	392	63	329	26.2	2.7	6.1
1998	390	81	309	24.3	3.4	6.5
1999	386	65	321	25.7	2.7	6.1
2000	429	89	340	26.9	3.6	5.5
2001	375	84	291	25.0	3.4	5.2
2002²	331	74	257	22.9	3.0	5.4
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.4A Numbers (in Thousands) of Persons Who First Used Heroin in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	46	*	*	*	*	*
1968	87	*	*	16.6	*	*
1969	45	*	36	19.4	*	1.4
1970	85	34	*	23.1	1.5	*
1971	104	22	82	19.4	0.9	3.1
1972	122	21	101	20.5	0.9	3.4
1973	207	36	172	20.5	1.3	5.2
1974	185	*	147	20.2	*	4.7
1975	78	*	63	21.3	*	1.8
1976	72	*	66	20.8	*	1.8
1977	109	7	101	23.0	0.3	2.5
1978	90	*	70	20.1	*	2.2
1979	77	16	60	21.1	0.7	1.6
1980	70	*	52	20.7	*	1.5
1981	113	16	97	20.8	0.8	2.7
1982	56	*	52	23.0	*	1.2
1983	82	*	78	23.0	*	1.9
1984	103	*	82	22.7	*	1.5
1985	32	*	29	24.5	*	0.5
1986	88	*	61	22.4	*	1.3
1987	91	*	85	25.3	*	1.8
1988	69	*	67	23.7	*	1.7
1989	97	*	89	25.0	*	1.6
1990	60	*	54	26.6	*	*
1991	64	*	62	24.9	*	1.1
1992	96	9	87	27.2	0.5	1.3
1993	64	8	56	25.5	0.4	0.7
1994	78	19	59	25.1	0.9	*
1995	121	36	85	23.9	1.6	0.9
1996	140	26	115	24.1	1.2	2.4
1997	126	37	89	23.1	1.6	2.0
1998	164	29	136	23.4	1.2	3.1
1999	132	37	95	22.8	1.5	2.3
2000	137	43	94	20.6	1.6	2.6
2001	162	39	123	23.6	1.6	2.8
2002²	122	26	96	21.4	1.0	2.0
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.5A Numbers (in Thousands) of Persons Who First Used Hallucinogens in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	70	*	64	20.7	*	3.2
1966	145	70	75	20.2	3.1	2.5
1967	300	112	188	19.0	5.0	7.1
1968	361	183	177	18.7	7.8	6.2
1969	890	320	570	19.1	13.9	21.6
1970	996	416	580	18.5	18.2	22.7
1971	988	429	560	18.3	18.6	21.1
1972	1,059	566	493	17.6	24.2	18.5
1973	871	454	417	17.8	19.1	16.1
1974	978	488	491	18.4	20.5	17.3
1975	981	495	486	18.0	20.9	17.4
1976	970	466	504	18.8	20.1	17.6
1977	904	409	495	18.5	17.9	18.3
1978	942	449	493	18.0	19.6	17.8
1979	982	492	490	18.5	22.4	15.8
1980	981	431	550	18.7	20.1	19.0
1981	960	379	581	19.3	18.3	19.1
1982	1,025	384	641	20.2	18.5	19.9
1983	716	288	428	18.7	13.9	15.2
1984	760	298	462	19.4	14.5	15.3
1985	716	286	430	19.0	13.8	14.9
1986	761	310	451	19.5	15.8	14.4
1987	770	351	419	19.2	18.1	14.6
1988	802	315	487	19.2	16.7	17.4
1989	785	299	487	19.0	15.9	17.5
1990	704	279	424	19.6	14.9	14.2
1991	762	329	434	19.1	17.4	15.2
1992	700	324	375	18.9	16.5	13.0
1993	813	379	434	19.2	19.0	14.2
1994	920	476	444	18.0	23.3	17.1
1995	993	492	500	18.2	23.3	19.4
1996	1,079	519	561	19.1	24.0	21.4
1997	1,117	520	597	19.0	23.2	23.2
1998	1,192	533	659	19.0	23.1	24.4
1999	1,449	640	809	18.7	27.6	32.0
2000	1,564	728	835	18.7	30.8	31.9
2001	1,619	725	894	19.3	30.3	31.6
2002²	1,110	554	556	18.3	22.6	20.3
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.6A Numbers (in Thousands) of Persons Who First Used LSD in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	40	*	28	*	*	1.4
1966	93	43	50	22.3	2.0	1.3
1967	178	65	113	19.4	2.7	4.0
1968	337	199	138	18.1	9.1	4.6
1969	677	228	448	19.4	9.7	17.0
1970	816	371	445	18.1	16.1	17.6
1971	810	318	492	18.8	13.7	17.2
1972	894	470	424	17.6	20.1	15.7
1973	854	437	417	18.3	18.3	15.0
1974	777	398	380	18.1	16.8	13.8
1975	700	364	336	18.3	15.4	11.2
1976	595	264	330	18.0	11.3	11.8
1977	736	329	406	18.8	14.2	14.3
1978	651	268	383	18.4	11.8	13.1
1979	815	396	419	18.4	17.7	13.1
1980	795	381	414	18.4	17.7	13.8
1981	749	315	434	19.1	15.1	13.9
1982	739	310	430	19.1	14.7	13.2
1983	554	229	326	18.8	11.1	11.2
1984	601	222	379	19.6	10.9	11.9
1985	567	246	320	19.4	11.9	9.9
1986	495	211	285	19.2	10.6	9.2
1987	552	326	226	18.2	16.7	7.4
1988	627	277	350	18.5	14.6	12.5
1989	620	236	384	19.2	12.6	12.4
1990	579	263	316	19.3	14.1	10.5
1991	632	296	337	18.6	15.7	12.3
1992	631	292	340	18.6	15.1	12.1
1993	553	263	290	18.7	13.4	9.9
1994	736	413	323	17.8	20.2	12.0
1995	766	405	361	17.6	19.3	14.6
1996	844	422	422	18.3	19.4	16.2
1997	800	415	384	18.2	18.5	14.9
1998	735	403	332	18.0	17.6	13.1
1999	798	413	385	17.9	17.6	14.5
2000	872	442	430	18.1	18.6	16.0
2001	631	334	296	17.8	13.8	11.0
2002²	272	170	102	17.1	6.9	3.9
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.7A Numbers (in Thousands) of Persons Who First Used PCP in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	*	*	*	*	*	*
1969	71	49	*	17.7	2.1	*
1970	195	84	111	18.2	3.6	4.0
1971	231	118	113	18.1	5.0	4.3
1972	370	196	174	18.3	8.2	5.4
1973	341	144	197	18.6	6.0	7.0
1974	449	221	228	17.8	9.0	7.5
1975	440	236	205	18.4	9.8	5.9
1976	505	248	257	18.9	10.4	7.5
1977	432	159	273	19.6	6.8	8.0
1978	404	148	256	20.2	6.4	6.8
1979	332	135	197	18.9	6.0	5.9
1980	323	114	208	20.4	5.1	5.5
1981	255	78	177	20.0	3.7	5.1
1982	238	58	180	20.5	2.7	5.2
1983	152	62	90	18.8	3.0	2.7
1984	123	24	99	19.8	1.2	3.1
1985	122	46	75	19.1	2.3	2.2
1986	139	35	104	20.0	1.7	3.0
1987	108	44	64	19.8	2.2	1.8
1988	107	43	65	19.8	2.2	1.7
1989	131	46	85	20.6	2.4	2.1
1990	83	45	38	22.2	2.3	0.6
1991	84	35	49	21.0	1.8	1.2
1992	88	29	59	18.8	1.5	2.1
1993	68	40	28	19.2	2.0	0.5
1994	104	67	36	16.8	3.3	1.3
1995	174	73	100	18.7	3.4	3.5
1996	157	84	73	17.9	3.6	2.2
1997	131	65	67	17.8	2.7	2.4
1998	119	70	48	17.6	3.0	1.5
1999	158	89	68	17.6	3.6	2.4
2000	174	119	55	16.6	4.8	1.9
2001	191	106	85	17.8	4.2	2.5
2002²	131	85	46	16.7	3.4	1.5
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.8A Numbers (in Thousands) of Persons Who First Used Ecstasy in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	*	*	*	*	*	*
1969	*	*	*	*	*	*
1970	*	*	*	*	*	*
1971	*	*	*	*	*	*
1972	*	*	*	*	*	*
1973	*	*	*	*	*	*
1974	*	*	*	*	*	*
1975	*	*	*	*	*	*
1976	55	*	45	22.3	*	*
1977	*	*	*	*	*	*
1978	*	*	*	*	*	*
1979	39	*	36	23.2	*	0.6
1980	32	*	25	23.8	*	*
1981	33	*	33	*	*	0.9
1982	28	*	*	*	*	*
1983	79	*	68	25.8	*	1.2
1984	90	*	90	26.1	*	1.5
1985	148	15	133	22.3	0.7	3.2
1986	152	23	130	23.0	1.1	3.1
1987	197	21	176	22.9	1.0	5.2
1988	206	42	164	23.4	2.2	3.8
1989	200	31	169	22.4	1.6	4.3
1990	228	22	206	23.7	1.1	4.3
1991	165	19	146	22.5	0.9	3.7
1992	202	27	175	22.5	1.3	4.3
1993	199	38	161	22.8	1.8	4.4
1994	258	59	198	23.0	2.8	5.0
1995	371	68	303	21.5	3.1	9.1
1996	406	102	304	23.8	4.4	7.9
1997	566	124	442	22.2	5.4	12.3
1998	819	167	652	21.3	7.1	19.3
1999	1,386	328	1,058	21.5	13.8	31.1
2000	1,737	465	1,272	21.2	19.2	38.0
2001	1,786	530	1,256	21.7	21.9	34.6
2002²	1,078	371	707	20.7	14.9	19.9
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.9A Numbers (in Thousands) of Persons Who First Used Inhalants in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	79	79	*	13.5	3.6	*
1966	198	161	37	15.1	6.6	*
1967	140	88	52	16.9	3.2	1.7
1968	240	163	77	17.3	6.7	*
1969	264	184	80	16.3	8.1	3.0
1970	298	216	81	15.8	7.9	3.0
1971	331	232	99	15.6	9.2	3.8
1972	343	239	104	16.5	9.6	3.3
1973	396	220	176	18.6	9.0	4.7
1974	502	257	245	18.2	9.3	7.4
1975	498	317	181	17.2	12.5	5.9
1976	663	319	344	18.5	13.3	10.1
1977	785	306	479	19.0	12.5	13.7
1978	666	365	302	18.1	15.2	9.2
1979	851	454	398	18.2	20.0	11.2
1980	722	403	320	18.6	18.5	8.7
1981	623	309	314	18.6	13.9	8.5
1982	531	282	249	18.4	12.5	6.3
1983	583	329	254	18.3	14.5	6.4
1984	554	336	218	17.8	15.8	6.2
1985	532	267	265	19.0	13.1	7.6
1986	571	346	225	18.8	16.6	5.7
1987	583	336	247	18.1	15.8	7.2
1988	614	357	257	17.5	17.5	8.2
1989	518	253	265	18.4	12.2	9.0
1990	472	246	226	18.1	12.1	7.8
1991	476	288	189	17.9	14.2	5.2
1992	576	368	208	16.8	17.6	7.3
1993	584	350	234	17.8	16.6	7.3
1994	594	405	189	16.5	17.9	7.0
1995	681	416	265	17.0	17.8	9.7
1996	694	414	280	17.1	16.1	9.6
1997	751	476	274	16.5	17.5	10.6
1998	846	513	333	17.5	18.8	11.5
1999	946	617	329	16.4	21.2	11.8
2000	1,122	781	341	16.3	27.5	11.1
2001	1,117	796	320	15.9	30.4	11.8
2002²	1,033	802	231	15.6	31.2	8.1
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.10A Numbers (in Thousands) of Persons Who First Used Pain Relievers Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	92	38	*	*	*	*
1966	41	*	*	23.8	*	*
1967	86	*	51	21.7	*	1.8
1968	261	79	182	19.6	3.2	7.8
1969	321	179	142	19.0	7.7	4.3
1970	336	128	208	20.3	4.5	5.9
1971	405	198	207	18.6	8.2	6.7
1972	325	139	186	19.3	5.6	5.8
1973	447	190	257	19.4	7.6	7.6
1974	525	200	325	20.1	7.2	8.4
1975	482	186	297	20.2	7.2	7.9
1976	467	165	303	20.3	6.9	8.2
1977	533	140	393	20.7	5.8	11.5
1978	522	194	329	20.4	8.2	8.6
1979	487	217	270	20.3	9.7	6.7
1980	485	171	313	22.1	7.4	5.7
1981	497	138	359	21.4	6.3	8.5
1982	422	156	266	21.3	6.8	5.7
1983	628	176	452	21.8	8.0	10.6
1984	503	113	390	24.8	5.2	7.9
1985	511	131	380	22.2	5.7	8.9
1986	572	96	476	24.3	4.5	10.7
1987	630	135	495	24.9	5.9	9.7
1988	552	101	451	24.4	4.8	9.5
1989	670	147	523	24.2	7.2	11.3
1990	573	108	465	23.6	5.1	10.2
1991	629	166	463	23.6	7.9	10.2
1992	785	171	614	25.1	7.4	11.2
1993	689	192	498	22.4	8.4	12.4
1994	949	269	680	23.3	11.8	14.8
1995	896	293	603	22.3	12.0	15.0
1996	1,125	380	745	21.4	15.6	21.5
1997	1,408	470	938	22.0	18.8	24.9
1998	1,649	583	1,066	23.2	22.6	24.6
1999	1,925	726	1,199	22.4	28.3	30.1
2000	2,475	952	1,523	22.1	38.4	39.2
2001	2,490	1,105	1,385	21.0	45.9	36.2
2002²	2,471	1,098	1,373	22.2	46.2	32.8
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.11A Numbers (in Thousands) of Persons Who First Used Tranquilizers Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	73	*	42	17.2	*	*
1966	88	*	*	19.1	*	*
1967	101	*	97	23.2	*	2.8
1968	142	27	115	20.3	1.2	4.4
1969	247	115	131	19.5	4.9	3.8
1970	216	97	119	19.3	4.2	3.7
1971	227	125	102	17.9	5.3	3.2
1972	393	147	246	19.9	6.2	7.1
1973	466	145	321	20.6	5.9	8.6
1974	477	238	239	18.7	9.7	7.1
1975	522	169	353	20.4	7.1	9.3
1976	535	229	305	19.4	9.4	8.7
1977	459	169	290	20.7	7.1	7.7
1978	406	100	306	21.7	4.3	7.9
1979	463	176	287	21.1	7.7	6.9
1980	385	128	257	20.6	5.9	6.6
1981	436	130	307	21.2	6.1	8.1
1982	436	99	337	22.1	4.7	8.2
1983	361	61	300	22.1	2.5	7.2
1984	447	84	363	24.1	4.0	6.8
1985	465	98	367	25.3	4.8	6.7
1986	367	86	281	25.4	4.3	5.5
1987	393	54	339	24.7	2.4	6.9
1988	430	60	370	24.9	3.0	7.9
1989	441	64	378	24.9	3.2	8.1
1990	406	91	314	24.4	4.8	6.7
1991	451	63	388	26.7	3.1	6.5
1992	431	70	361	27.5	3.0	5.8
1993	557	124	433	26.9	6.0	6.8
1994	469	103	366	24.8	4.8	7.3
1995	604	155	449	25.0	7.1	8.2
1996	651	174	477	22.8	7.6	11.6
1997	658	195	463	23.5	8.2	10.8
1998	904	266	638	24.1	11.1	13.3
1999	929	283	646	22.8	11.7	14.5
2000	1,442	384	1,059	25.2	15.7	22.2
2001	1,266	412	854	23.2	16.8	18.6
2002²	1,194	386	809	23.5	15.8	16.8
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.12A Numbers (in Thousands) of Persons Who First Used Stimulants Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	189	*	148	20.4	*	5.0
1966	206	41	166	19.5	1.9	7.7
1967	217	105	112	18.9	4.7	4.0
1968	382	155	228	18.3	7.1	9.9
1969	472	202	270	18.6	9.0	10.7
1970	587	240	347	18.9	10.5	12.8
1971	608	218	390	18.8	9.2	13.8
1972	675	300	375	18.8	12.7	12.9
1973	557	241	317	19.0	10.2	10.3
1974	563	235	328	18.5	9.8	11.8
1975	596	255	342	18.7	10.3	11.0
1976	641	291	351	19.6	12.3	10.9
1977	720	336	384	18.4	14.4	12.4
1978	571	225	346	18.8	9.9	10.9
1979	603	271	332	18.3	12.2	10.5
1980	699	288	412	19.0	13.3	13.0
1981	633	222	411	20.0	10.5	11.1
1982	599	275	324	19.0	12.7	9.1
1983	516	157	359	21.2	7.6	8.2
1984	426	151	275	19.8	7.4	7.8
1985	381	130	251	20.3	6.5	6.9
1986	364	135	229	19.8	6.8	6.9
1987	379	130	248	21.3	6.6	6.1
1988	365	143	222	20.0	7.4	6.2
1989	368	102	266	20.8	4.9	7.7
1990	342	107	235	21.7	5.4	6.0
1991	288	86	202	21.9	4.2	4.9
1992	306	132	174	21.2	6.5	3.9
1993	443	142	301	20.6	7.0	8.5
1994	432	187	245	20.0	8.7	6.6
1995	564	240	324	20.5	10.9	9.3
1996	636	242	394	20.7	10.7	10.9
1997	595	253	342	20.4	10.8	9.7
1998	687	292	394	20.5	12.1	10.6
1999	790	333	457	20.7	13.4	11.3
2000	850	387	463	20.0	15.4	12.3
2001	875	438	437	18.8	17.7	12.9
2002²	761	385	376	19.8	15.2	9.2
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.13A Numbers (in Thousands) of Persons Who First Used Methamphetamines Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	43	*	*	*	*	*
1966	89	*	59	19.4	*	2.8
1967	92	44	*	17.7	2.0	*
1968	142	61	81	18.1	2.7	3.5
1969	257	125	131	18.5	5.5	4.9
1970	268	99	169	18.9	4.3	6.4
1971	469	143	326	19.1	5.9	11.5
1972	334	129	205	18.3	5.4	7.7
1973	422	160	262	19.3	6.7	8.2
1974	346	139	207	18.8	5.7	7.2
1975	403	162	241	18.8	6.7	8.0
1976	404	207	197	18.7	8.6	6.0
1977	487	228	258	18.6	9.7	7.8
1978	312	122	191	19.2	5.3	6.0
1979	478	237	241	18.0	10.6	7.4
1980	373	165	207	18.5	7.5	6.2
1981	414	138	276	20.2	6.5	6.9
1982	403	147	256	19.2	6.8	7.6
1983	377	117	260	20.2	5.6	6.9
1984	327	114	213	19.5	5.5	6.2
1985	315	110	205	20.6	5.4	5.3
1986	325	112	214	19.9	5.6	6.3
1987	315	102	213	21.4	5.1	5.0
1988	274	83	191	21.1	4.3	5.1
1989	279	68	211	21.6	3.5	5.9
1990	217	46	171	22.0	2.3	4.4
1991	235	53	182	22.1	2.7	4.8
1992	208	88	120	20.6	4.4	2.9
1993	348	108	240	21.1	5.3	6.6
1994	287	110	177	20.3	5.3	5.0
1995	366	140	226	20.7	6.4	6.3
1996	357	137	220	20.7	6.0	6.3
1997	331	126	205	20.3	5.5	5.7
1998	372	145	227	21.3	6.2	5.4
1999	346	121	225	21.4	5.0	5.7
2000	344	155	189	19.7	6.4	4.9
2001	364	167	197	18.8	6.7	5.9
2002²	323	143	179	20.2	5.6	3.7
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.14A Numbers (in Thousands) of Persons Who First Used Sedatives Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	45	38	*	*	*	*
1966	60	*	48	20.0	*	1.6
1967	147	50	97	18.8	2.1	4.0
1968	199	87	111	18.5	4.0	4.4
1969	281	180	101	18.8	7.9	3.0
1970	315	178	137	18.0	7.7	4.6
1971	450	197	253	19.0	8.4	8.3
1972	400	151	248	18.4	6.4	9.2
1973	519	290	229	18.0	11.6	7.8
1974	592	231	362	18.7	9.6	12.2
1975	479	188	291	19.9	7.8	9.1
1976	459	271	188	17.8	11.4	6.1
1977	542	153	389	19.8	6.5	11.6
1978	439	206	233	19.7	9.0	5.6
1979	508	211	298	19.2	9.4	9.1
1980	379	138	241	19.8	6.3	6.5
1981	413	116	296	22.1	5.5	7.5
1982	342	119	223	21.4	5.6	5.4
1983	274	58	216	20.7	2.8	5.6
1984	183	40	143	21.7	1.9	3.6
1985	137	40	97	23.2	2.0	2.1
1986	81	*	58	22.8	*	1.5
1987	116	*	109	29.2	*	1.3
1988	75	*	66	24.3	*	0.9
1989	91	24	67	22.6	1.1	1.4
1990	104	21	84	24.6	0.9	1.5
1991	72	21	51	24.4	1.0	0.9
1992	108	37	71	23.8	1.7	1.3
1993	97	32	65	23.4	1.6	1.6
1994	109	25	85	24.3	1.1	1.5
1995	104	29	75	21.8	1.3	1.7
1996	134	46	88	23.6	1.8	2.0
1997	135	45	90	21.8	1.8	2.0
1998	158	55	103	25.9	2.2	2.2
1999	191	53	137	27.0	2.0	2.2
2000	224	75	149	23.5	2.8	2.4
2001	234	90	145	24.9	3.3	2.0
2002²	225	79	146	29.9	3.0	1.5
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.15A Numbers (in Thousands) of Persons Who First Used Alcohol in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	3,283	1,824	1,459	17.4	95.6	224.2
1966	2,954	1,698	1,256	16.9	90.4	200.7
1967	3,609	2,013	1,595	17.1	108.2	237.0
1968	3,648	2,204	1,444	17.0	116.2	207.1
1969	3,955	2,217	1,738	17.1	115.7	270.4
1970	4,064	2,408	1,656	17.0	122.7	265.6
1971	3,918	2,430	1,488	16.8	122.6	237.4
1972	4,320	2,767	1,553	16.9	143.1	258.2
1973	4,140	2,676	1,464	16.5	141.9	250.2
1974	4,053	2,759	1,294	16.6	147.8	225.9
1975	3,999	2,630	1,368	16.8	140.5	228.2
1976	3,900	2,603	1,298	16.7	142.5	219.0
1977	4,103	2,850	1,253	16.4	161.4	224.2
1978	3,938	2,734	1,204	16.3	159.5	215.8
1979	3,959	2,773	1,186	16.3	169.6	218.0
1980	3,596	2,381	1,215	16.8	148.5	217.0
1981	3,744	2,526	1,218	16.5	161.2	225.0
1982	3,642	2,515	1,127	16.6	159.8	208.1
1983	3,219	2,195	1,024	16.6	140.0	201.0
1984	3,407	2,409	997	16.3	157.4	202.0
1985	3,288	2,233	1,055	16.8	147.9	219.7
1986	3,207	2,359	848	16.0	159.8	178.6
1987	3,086	2,101	985	16.6	145.9	197.6
1988	3,046	2,098	949	16.3	147.4	187.9
1989	3,220	2,121	1,099	16.7	151.8	210.5
1990	2,884	1,950	934	16.5	136.3	185.6
1991	2,961	1,887	1,074	16.7	127.0	218.6
1992	3,182	2,114	1,068	16.9	137.3	206.4
1993	3,190	2,234	956	16.4	141.3	190.2
1994	3,252	2,283	969	16.0	137.6	198.2
1995	3,278	2,258	1,021	16.2	133.5	207.3
1996	3,462	2,358	1,104	16.5	134.6	218.8
1997	3,697	2,635	1,062	16.1	146.0	214.5
1998	3,949	2,709	1,239	16.5	150.6	236.7
1999	4,258	3,007	1,251	16.3	165.5	239.9
2000	5,079	3,664	1,415	16.1	215.1	287.7
2001²	5,259	3,830	1,429	16.2	225.7	288.8
2002²	--	--	1,398	--	219.1	305.3
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.16A Numbers (in Thousands) of Persons Who First Used Alcohol in the United States by Underage and Legal Drinking Age Groups, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	3,283	2,694	589	17.4	123.1	172.2
1966	2,954	2,571	383	16.9	117.2	133.9
1967	3,609	3,123	486	17.1	142.0	148.9
1968	3,648	3,149	499	17.0	141.4	134.8
1969	3,955	3,257	698	17.1	146.4	228.3
1970	4,064	3,344	720	17.0	148.5	234.0
1971	3,918	3,261	657	16.8	144.4	197.3
1972	4,320	3,617	702	16.9	163.0	232.0
1973	4,140	3,712	428	16.5	171.5	135.1
1974	4,053	3,581	472	16.6	167.5	154.5
1975	3,999	3,456	543	16.8	161.1	165.3
1976	3,900	3,426	474	16.7	163.2	142.4
1977	4,103	3,640	463	16.4	179.3	153.9
1978	3,938	3,471	467	16.3	176.3	152.9
1979	3,959	3,545	414	16.3	187.6	142.0
1980	3,596	3,168	428	16.8	171.4	127.4
1981	3,744	3,350	393	16.5	185.3	122.3
1982	3,642	3,211	431	16.6	178.2	125.5
1983	3,219	2,814	405	16.6	156.9	140.1
1984	3,407	3,022	384	16.3	172.6	136.4
1985	3,288	2,869	419	16.8	167.4	148.9
1986	3,207	2,900	307	16.0	171.5	113.4
1987	3,086	2,669	417	16.6	160.3	150.3
1988	3,046	2,638	408	16.3	157.3	164.3
1989	3,220	2,763	457	16.7	167.3	169.8
1990	2,884	2,472	412	16.5	147.7	162.3
1991	2,961	2,467	495	16.7	144.4	194.5
1992	3,182	2,647	535	16.9	149.7	189.1
1993	3,190	2,766	424	16.4	152.2	160.6
1994	3,252	2,871	381	16.0	151.9	153.5
1995	3,278	2,857	422	16.2	148.0	172.9
1996	3,462	3,011	451	16.5	152.3	165.8
1997	3,697	3,281	416	16.1	160.5	169.7
1998	3,949	3,493	455	16.5	170.8	163.1
1999	4,258	3,752	506	16.3	181.3	190.9
2000	5,079	4,526	554	16.1	231.1	235.8
2001²	5,259	4,654	605	16.2	239.2	244.4
2002²	--	--	539	--	239.4	224.6
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.17A Numbers (in Thousands) of Persons Who First Used Any Cigarettes in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	2,771	2,145	626	15.0	121.6	101.5
1966	2,621	1,907	714	15.4	109.9	101.3
1967	3,087	2,368	719	15.4	140.1	96.6
1968	3,020	2,192	828	15.5	123.7	108.5
1969	2,984	2,340	645	15.4	134.9	79.6
1970	3,152	2,433	719	15.1	131.9	92.9
1971	3,233	2,506	727	15.2	135.3	88.1
1972	3,520	2,776	744	15.0	153.3	90.1
1973	3,422	2,785	637	14.7	154.5	72.0
1974	3,387	2,720	666	14.9	151.9	76.3
1975	3,436	2,715	721	15.2	158.7	75.4
1976	3,348	2,573	775	15.3	153.3	80.5
1977	2,862	2,239	624	15.1	135.2	65.0
1978	3,139	2,515	624	15.2	154.9	60.6
1979	2,941	2,270	671	15.3	141.9	67.3
1980	2,724	1,988	736	15.8	126.2	70.9
1981	2,617	1,953	665	15.4	125.5	69.1
1982	2,514	1,994	521	15.5	129.6	50.0
1983	2,602	2,031	571	15.9	134.6	52.9
1984	2,412	1,912	500	15.2	123.5	52.1
1985	2,534	1,959	575	15.3	128.2	61.0
1986	2,364	1,827	537	15.5	119.5	55.9
1987	2,417	1,797	620	15.5	116.1	65.6
1988	2,484	1,787	697	15.6	116.8	71.3
1989	2,532	1,831	701	16.0	123.0	70.1
1990	2,420	1,777	644	15.6	116.5	64.1
1991	2,482	1,831	652	15.5	116.3	64.9
1992	2,625	1,892	733	15.9	117.8	67.9
1993	2,820	2,152	668	15.2	131.6	66.4
1994	2,866	2,144	722	15.3	125.2	70.4
1995	3,111	2,392	718	15.3	139.2	71.7
1996	3,249	2,486	763	15.3	141.7	79.9
1997	3,317	2,454	863	15.6	136.7	87.6
1998	3,257	2,521	736	15.5	141.8	75.9
1999	3,197	2,408	788	15.8	138.6	82.7
2000	2,966	2,247	719	15.8	129.6	74.1
2001²	2,677	2,028	650	16.1	115.2	65.3
2002²	--	--	658	--	100.1	59.6
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.18A Numbers (in Thousands) of Persons Who Began Daily Cigarette Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	1,518	693	825	18.2	34.1	62.4
1966	1,613	843	770	17.8	41.7	57.4
1967	1,691	871	820	17.3	41.9	60.2
1968	1,664	684	979	18.2	30.5	64.5
1969	1,929	879	1,051	18.2	40.0	67.7
1970	1,771	882	890	18.1	40.4	50.5
1971	1,851	938	913	17.7	42.5	51.6
1972	2,021	1,052	970	17.4	47.4	56.1
1973	2,137	1,117	1,020	17.6	48.5	52.8
1974	2,003	1,130	874	17.5	49.7	46.4
1975	2,218	1,317	901	17.3	58.7	46.1
1976	1,971	1,107	864	17.7	50.7	40.7
1977	1,927	1,074	853	17.7	49.6	40.2
1978	1,930	1,024	906	18.2	48.3	41.4
1979	1,776	939	837	17.9	45.5	37.6
1980	1,707	872	835	18.3	41.7	34.6
1981	1,611	863	748	18.0	43.0	32.1
1982	1,699	864	835	18.2	42.8	36.0
1983	1,496	737	760	18.4	36.8	32.3
1984	1,425	729	696	18.0	37.7	30.8
1985	1,421	778	642	17.6	40.1	29.7
1986	1,364	783	581	18.0	41.5	24.2
1987	1,421	739	682	18.2	38.6	28.8
1988	1,302	618	684	18.8	33.9	28.8
1989	1,317	634	683	18.4	34.6	30.6
1990	1,441	704	737	18.7	39.1	31.6
1991	1,525	676	849	19.1	36.8	34.9
1992	1,485	735	750	18.7	39.1	31.1
1993	1,394	787	608	17.8	40.9	27.1
1994	1,627	845	782	18.2	42.1	34.0
1995	1,606	875	731	17.9	42.4	33.6
1996	1,940	1,038	902	18.8	49.2	38.6
1997	2,020	1,085	935	18.5	50.6	42.8
1998	1,866	1,024	842	18.0	46.6	40.7
1999	1,869	1,030	839	18.4	46.6	38.7
2000	1,911	1,030	881	18.4	45.5	38.6
2001	1,617	879	738	19.0	38.9	30.8
2002²	1,360	734	626	19.4	31.8	24.6
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.19A Numbers (in Thousands) of Persons Who First Used Smokeless Tobacco in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	595	384	210	17.5	16.7	8.0
1966	410	202	208	18.2	7.0	8.4
1967	630	334	296	17.8	12.0	11.2
1968	536	310	226	17.0	11.6	9.4
1969	598	369	229	17.1	13.3	8.1
1970	655	371	285	16.6	12.9	11.4
1971	668	366	303	17.7	12.0	8.9
1972	756	464	292	17.1	15.8	9.0
1973	866	514	351	17.2	19.5	12.0
1974	860	553	307	16.7	19.3	10.5
1975	940	594	346	17.1	19.2	10.3
1976	963	627	336	17.0	23.1	9.0
1977	1,195	718	477	17.5	27.4	13.7
1978	1,309	843	466	16.5	31.8	13.6
1979	1,410	933	477	17.1	37.7	11.9
1980	1,281	811	470	17.6	34.4	13.3
1981	1,391	864	526	17.2	37.8	14.6
1982	1,426	884	542	17.4	37.5	15.2
1983	1,282	897	385	16.9	41.4	11.2
1984	1,475	985	490	17.1	48.5	14.4
1985	1,149	836	313	16.1	41.9	9.8
1986	1,213	852	361	16.5	44.1	12.6
1987	974	630	344	17.6	32.9	11.0
1988	1,038	673	365	17.8	34.6	12.0
1989	930	580	350	17.1	30.3	13.6
1990	966	622	344	17.6	32.6	11.3
1991	964	580	385	18.6	29.9	12.0
1992	1,081	689	393	18.0	34.3	14.0
1993	976	655	321	16.6	31.7	13.2
1994	1,029	655	373	18.6	30.5	12.0
1995	1,014	666	348	17.8	29.9	12.0
1996	1,022	688	334	17.3	29.7	13.1
1997	1,007	662	345	18.2	28.4	13.0
1998	978	614	364	17.6	25.7	13.0
1999	996	652	344	17.3	26.7	13.2
2000	1,046	622	424	18.4	26.0	14.3
2001	1,008	574	434	18.6	24.3	14.9
2002²	1,006	595	412	18.7	24.9	12.2
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.20A Numbers (in Thousands) of Persons Who First Used Cigars in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	1,007	352	655	19.8	14.8	33.9
1966	1,295	597	698	18.3	27.0	40.6
1967	1,232	497	735	19.0	22.3	36.2
1968	1,270	470	801	19.2	20.9	38.9
1969	1,519	615	904	20.2	25.1	36.7
1970	1,282	444	838	19.9	18.0	36.0
1971	1,292	499	792	19.8	20.7	32.6
1972	1,540	651	889	18.9	27.0	37.2
1973	1,560	599	961	18.8	24.4	42.6
1974	1,387	506	881	20.2	19.9	31.8
1975	1,564	605	959	19.4	24.0	36.4
1976	1,453	520	933	20.6	21.9	31.4
1977	1,237	456	781	19.8	18.8	27.6
1978	1,290	426	864	20.1	18.3	30.5
1979	1,312	429	883	20.5	18.2	29.3
1980	1,387	390	997	21.0	16.6	32.7
1981	1,195	331	864	21.0	14.7	26.4
1982	1,476	384	1,092	22.1	17.8	32.7
1983	1,238	430	808	20.5	19.8	23.4
1984	1,240	322	918	20.8	15.3	30.6
1985	1,231	395	836	20.5	19.3	27.6
1986	1,169	391	777	20.6	19.7	23.9
1987	1,369	291	1,079	23.0	14.4	32.7
1988	1,566	375	1,191	22.0	18.9	36.4
1989	1,619	351	1,267	23.5	17.2	35.3
1990	1,480	346	1,134	22.4	18.0	35.4
1991	1,646	443	1,203	22.2	21.9	35.5
1992	1,893	465	1,427	23.0	22.6	41.0
1993	2,119	559	1,560	23.7	26.9	42.2
1994	2,446	765	1,681	22.3	36.4	50.2
1995	2,684	923	1,761	21.6	42.8	57.8
1996	3,197	1,030	2,167	21.9	46.6	73.3
1997	3,557	1,192	2,364	22.2	54.0	78.4
1998	3,686	1,402	2,284	22.0	62.5	76.9
1999	3,524	1,371	2,152	21.5	61.9	77.6
2000	3,527	1,494	2,033	21.9	67.8	67.9
2001	3,291	1,509	1,782	21.7	69.5	63.1
2002²	3,003	1,381	1,622	20.9	62.4	56.0
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.21A Numbers (in Thousands) of Males Who First Used Marijuana in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	536	205	331	18.7	20.0	34.4
1966	529	215	313	18.8	19.4	31.6
1967	863	276	587	19.0	25.1	55.6
1968	1,201	460	741	18.7	42.3	71.3
1969	1,726	623	1,103	19.1	59.1	109.1
1970	1,819	887	932	18.2	85.0	99.8
1971	1,717	797	920	18.3	74.5	98.6
1972	1,734	938	796	18.1	88.9	79.5
1973	1,978	1,017	961	18.6	99.2	107.9
1974	1,787	1,124	664	18.1	111.6	67.3
1975	1,664	988	676	18.1	100.1	72.2
1976	1,521	919	602	18.2	98.8	72.2
1977	1,586	1,018	568	17.5	109.4	75.4
1978	1,474	923	551	17.6	102.7	71.7
1979	1,587	946	641	19.2	104.3	67.4
1980	1,204	755	448	17.9	84.6	57.9
1981	1,235	725	510	18.1	82.9	65.3
1982	1,291	783	508	18.7	93.1	61.0
1983	1,196	816	380	17.3	93.2	49.8
1984	1,107	717	390	17.6	85.7	50.9
1985	1,119	783	336	17.5	93.8	45.6
1986	1,055	729	325	16.9	90.1	44.8
1987	938	607	331	17.5	74.7	47.7
1988	835	562	274	17.8	69.0	37.1
1989	889	580	309	17.5	71.1	41.7
1990	760	418	341	18.4	48.3	43.9
1991	904	621	283	16.4	71.9	40.3
1992	1,130	658	472	17.3	75.2	67.5
1993	1,155	731	424	17.3	80.1	54.2
1994	1,279	850	430	17.0	92.2	58.3
1995	1,390	912	479	16.7	96.4	66.3
1996	1,260	860	400	16.6	90.3	55.4
1997	1,341	920	421	16.6	95.3	57.4
1998	1,353	931	422	16.6	94.9	58.1
1999	1,392	909	484	17.3	91.5	63.7
2000	1,499	1,019	480	17.0	102.3	63.9
2001	1,391	927	464	17.5	92.5	58.5
2002²	1,217	868	349	16.3	84.4	50.3
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.22A Numbers (in Thousands) of Males Who First Used Cocaine in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	62	*	49	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	157	*	111	20.1	*	9.8
1969	157	34	123	22.1	2.7	8.0
1970	177	52	125	18.8	4.5	10.0
1971	376	76	300	20.7	6.6	20.0
1972	308	71	238	19.4	5.6	17.4
1973	405	108	296	19.9	9.3	21.4
1974	531	113	418	21.3	9.7	23.0
1975	523	102	421	21.2	8.8	25.7
1976	582	155	427	21.2	13.6	25.3
1977	710	148	562	21.6	13.1	32.5
1978	772	146	625	21.4	13.4	37.0
1979	894	178	716	21.2	16.7	46.2
1980	907	172	734	22.4	16.5	42.9
1981	880	153	727	21.6	14.9	46.6
1982	849	150	700	22.6	14.7	38.8
1983	796	123	673	22.0	12.4	43.7
1984	754	190	564	21.1	19.4	36.9
1985	709	142	566	22.3	14.6	34.5
1986	777	133	643	23.6	13.9	37.0
1987	671	124	547	23.0	13.0	31.8
1988	684	102	582	23.4	10.9	36.9
1989	536	81	455	23.6	8.6	27.2
1990	560	102	458	24.0	11.2	24.7
1991	416	58	358	23.3	6.0	21.4
1992	458	91	366	24.8	9.4	18.3
1993	385	79	306	22.7	8.0	18.6
1994	395	89	306	22.7	8.5	17.7
1995	454	115	339	21.8	10.6	21.4
1996	541	135	406	22.7	12.2	26.5
1997	551	125	426	21.4	11.1	29.4
1998	555	166	389	20.5	14.1	27.1
1999	555	142	413	20.7	11.9	28.6
2000	636	182	454	21.4	14.8	28.4
2001	668	185	484	20.7	15.0	30.0
2002²	583	164	419	20.3	13.1	28.1
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.23A Numbers (in Thousands) of Males Who First Used Crack in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	*	*	*	*	*	*
1969	*	*	*	*	*	*
1970	*	*	*	*	*	*
1971	*	*	*	*	*	*
1972	*	*	*	*	*	*
1973	*	*	*	*	*	*
1974	*	*	*	*	*	*
1975	*	*	*	*	*	*
1976	*	*	*	*	*	*
1977	*	*	*	*	*	*
1978	65	*	52	20.3	*	3.3
1979	52	*	43	23.6	*	1.9
1980	113	*	83	23.1	*	2.8
1981	98	*	83	23.2	*	3.4
1982	132	*	124	26.1	*	4.1
1983	92	*	78	25.1	*	2.5
1984	145	23	122	23.3	2.3	4.5
1985	282	34	249	25.3	3.4	10.1
1986	164	21	142	26.2	2.2	5.2
1987	199	*	180	24.3	*	7.7
1988	237	21	217	25.9	2.2	7.2
1989	235	*	229	25.1	*	9.3
1990	276	19	257	27.7	2.1	7.9
1991	271	28	242	26.9	3.0	7.7
1992	285	19	267	28.9	1.9	6.4
1993	262	24	238	29.3	2.3	7.4
1994	262	28	234	28.3	2.7	5.2
1995	288	26	261	28.2	2.5	8.2
1996	233	34	198	26.8	2.9	6.5
1997	257	31	226	26.9	2.7	7.9
1998	272	54	218	24.5	4.5	9.3
1999	238	40	198	25.4	3.2	8.9
2000	259	53	206	26.9	4.3	6.8
2001	230	52	178	23.4	4.1	7.2
2002²	209	35	174	23.6	2.7	7.7
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.24A Numbers (in Thousands) of Males Who First Used Heroin in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	74	*	*	*	*	*
1969	42	*	36	19.9	*	2.8
1970	*	*	*	*	*	*
1971	92	13	79	19.7	1.1	6.1
1972	79	*	72	20.8	*	4.8
1973	165	*	150	21.3	*	9.2
1974	127	*	115	20.6	*	7.4
1975	53	*	49	23.1	*	2.7
1976	58	*	58	21.6	*	3.2
1977	80	*	77	22.2	*	4.8
1978	61	*	57	20.5	*	3.7
1979	60	15	45	20.4	1.4	2.7
1980	54	*	37	20.6	*	2.3
1981	60	*	57	20.8	*	3.2
1982	43	*	39	22.3	*	2.1
1983	58	*	56	23.5	*	2.5
1984	60	*	48	22.7	*	1.9
1985	26	*	24	24.2	*	0.7
1986	69	*	53	22.9	*	2.6
1987	57	*	53	25.4	*	2.0
1988	53	*	52	24.4	*	2.4
1989	62	*	57	25.5	*	2.2
1990	36	*	31	27.3	*	*
1991	52	*	51	24.0	*	2.0
1992	72	*	66	28.5	*	1.9
1993	37	5	32	23.3	0.5	1.2
1994	47	7	39	25.3	0.7	*
1995	72	24	48	24.1	2.3	*
1996	97	12	85	24.3	1.1	3.8
1997	86	19	67	22.8	1.7	3.3
1998	107	16	91	24.5	1.3	3.4
1999	87	17	70	24.1	1.4	3.3
2000	80	17	63	22.1	1.3	3.4
2001	89	15	74	24.5	1.2	3.6
2002²	79	13	66	20.9	1.0	3.4
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.25A Numbers (in Thousands) of Males Who First Used Hallucinogens in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	39	*	39	*	*	4.0
1966	77	37	39	17.0	3.6	3.7
1967	226	93	133	18.7	8.3	10.8
1968	222	104	118	19.2	8.5	7.8
1969	508	181	328	18.9	15.9	26.0
1970	685	255	430	18.9	22.6	34.5
1971	562	259	304	18.0	22.9	24.7
1972	637	359	278	17.2	31.3	22.5
1973	536	240	296	18.2	21.5	24.3
1974	600	273	326	18.6	24.3	24.7
1975	600	289	311	17.8	25.3	25.2
1976	584	278	306	18.4	25.0	24.1
1977	560	247	313	18.6	22.6	25.4
1978	517	239	278	17.9	21.9	22.8
1979	636	293	343	18.6	27.8	23.9
1980	618	268	350	18.8	26.2	25.9
1981	519	201	318	19.2	20.1	22.9
1982	584	193	392	19.3	19.3	29.4
1983	469	205	264	18.6	20.5	20.0
1984	454	216	237	18.8	21.7	17.7
1985	385	135	250	18.8	13.5	19.1
1986	392	176	216	19.1	18.5	15.3
1987	443	196	247	19.6	20.6	18.7
1988	569	210	359	19.5	22.7	27.3
1989	460	167	292	19.2	18.2	22.5
1990	432	167	265	19.3	18.1	19.2
1991	455	195	260	19.1	21.2	20.0
1992	388	185	203	18.4	19.3	16.2
1993	491	232	259	18.9	23.6	19.3
1994	551	280	271	17.9	28.2	23.3
1995	563	265	298	18.3	25.1	25.1
1996	632	282	350	19.8	26.2	28.2
1997	631	266	365	19.3	23.7	29.7
1998	683	319	364	18.7	27.5	29.3
1999	833	351	483	18.9	30.0	40.2
2000	830	408	422	18.4	34.4	34.3
2001	819	359	460	19.2	29.5	34.7
2002²	555	267	289	18.0	21.2	24.1
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.26A Numbers (in Thousands) of Males Who First Used LSD in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	33	*	28	*	*	2.9
1966	39	*	20	16.9	*	*
1967	115	46	70	19.2	*	5.3
1968	226	129	98	18.7	11.9	6.1
1969	387	128	260	19.6	11.0	19.8
1970	567	240	327	18.4	21.2	26.5
1971	467	205	262	18.4	17.9	18.9
1972	566	273	293	17.8	23.9	23.5
1973	548	265	282	18.1	23.3	22.2
1974	473	214	258	18.6	18.8	19.3
1975	405	176	229	18.3	15.5	17.5
1976	391	166	225	18.0	14.8	18.1
1977	456	204	252	18.4	18.3	19.7
1978	359	157	202	17.9	14.5	16.0
1979	531	233	297	18.8	21.6	19.5
1980	564	266	298	18.5	25.7	21.5
1981	397	152	245	19.0	15.1	17.4
1982	430	169	261	18.5	16.8	18.7
1983	357	159	198	18.5	16.0	14.8
1984	375	144	231	20.1	14.7	14.7
1985	325	139	186	19.1	14.2	12.9
1986	279	115	164	19.1	11.8	11.5
1987	302	165	137	18.5	17.3	9.4
1988	471	204	267	18.5	21.8	20.8
1989	389	135	254	19.8	14.8	17.5
1990	355	161	195	19.3	17.6	14.3
1991	380	171	210	18.9	18.6	15.9
1992	370	165	205	18.7	17.5	15.5
1993	326	151	175	18.7	15.7	13.1
1994	444	243	201	17.7	24.4	16.3
1995	437	217	219	17.7	20.9	19.1
1996	483	227	256	18.6	21.0	21.1
1997	462	210	252	18.5	18.5	20.2
1998	442	249	193	17.8	21.6	16.6
1999	490	248	242	18.2	20.8	18.5
2000	506	253	254	18.0	21.1	20.6
2001	353	184	170	17.7	14.9	13.4
2002²	160	99	60	17.2	7.9	4.9
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.27A Numbers (in Thousands) of Males Who First Used PCP in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	*	*	*	*	*	*
1969	25	20	*	*	1.8	*
1970	133	46	86	18.8	4.1	6.1
1971	172	93	79	17.9	8.0	6.2
1972	224	106	117	17.5	9.0	8.8
1973	173	61	111	19.0	5.3	8.3
1974	323	149	174	18.1	12.4	11.6
1975	266	144	121	18.3	12.5	8.1
1976	306	125	181	19.2	11.0	11.7
1977	300	106	194	19.6	9.4	12.6
1978	243	60	183	21.0	5.4	10.1
1979	215	76	139	19.0	7.0	9.3
1980	231	81	150	20.7	7.6	8.1
1981	149	48	101	19.8	4.6	6.2
1982	171	36	135	20.9	3.5	8.1
1983	113	41	72	18.9	4.0	4.7
1984	87	20	66	19.5	2.0	4.3
1985	93	38	55	19.0	3.8	3.2
1986	80	*	74	21.8	*	4.3
1987	76	*	42	19.8	*	2.3
1988	79	23	56	21.0	2.4	2.9
1989	89	21	67	22.2	2.2	3.1
1990	43	24	19	21.8	2.6	*
1991	67	27	40	21.5	2.9	1.9
1992	54	10	45	19.3	1.0	3.2
1993	45	28	17	18.5	2.9	*
1994	74	48	26	17.0	4.7	1.9
1995	103	43	60	19.1	4.0	4.2
1996	83	47	37	17.2	4.1	2.8
1997	72	31	41	18.3	2.6	3.1
1998	81	52	29	17.3	4.4	1.9
1999	97	51	46	18.0	4.1	3.4
2000	103	66	37	16.9	5.4	2.6
2001	111	58	53	18.4	4.6	3.0
2002²	88	49	39	17.3	3.8	2.6
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.28A Numbers (in Thousands) of Males Who First Used Ecstasy in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	*	*	*	*	*	*
1969	*	*	*	*	*	*
1970	*	*	*	*	*	*
1971	*	*	*	*	*	*
1972	*	*	*	*	*	*
1973	*	*	*	*	*	*
1974	*	*	*	*	*	*
1975	*	*	*	*	*	*
1976	35	*	26	*	*	*
1977	*	*	*	*	*	*
1978	*	*	*	*	*	*
1979	29	*	29	*	*	*
1980	23	*	*	*	*	*
1981	*	*	*	*	*	*
1982	20	*	*	*	*	*
1983	48	*	*	*	*	*
1984	62	*	62	24.6	*	2.5
1985	71	*	64	23.1	*	2.6
1986	74	*	56	22.4	*	2.9
1987	98	*	89	22.1	*	5.7
1988	135	*	113	25.0	*	4.8
1989	141	27	114	23.3	2.9	5.2
1990	131	*	128	25.7	*	4.5
1991	72	*	64	23.4	*	2.9
1992	99	*	87	22.6	*	4.7
1993	123	17	106	23.1	1.6	5.7
1994	154	32	122	23.3	3.1	6.7
1995	206	31	175	21.1	2.8	11.3
1996	234	42	192	26.4	3.6	9.4
1997	353	60	292	23.3	5.3	15.2
1998	486	88	399	21.3	7.3	23.9
1999	780	156	624	21.5	12.9	38.8
2000	949	238	711	21.7	19.5	42.1
2001	968	238	731	22.9	19.3	38.4
2002²	536	151	386	21.5	11.9	22.6
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.29A Numbers (in Thousands) of Males Who First Used Inhalants in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	63	63	*	13.3	6.0	*
1966	170	133	37	15.2	10.9	*
1967	128	75	52	17.3	5.2	3.6
1968	200	130	69	17.8	11.0	*
1969	211	137	73	16.7	12.5	5.8
1970	201	135	66	16.0	9.3	5.0
1971	236	176	60	15.4	14.2	4.8
1972	229	157	72	16.8	13.4	4.4
1973	270	158	112	17.4	13.3	7.1
1974	361	186	176	18.3	13.8	10.4
1975	335	220	115	17.2	17.7	7.7
1976	429	211	218	18.3	19.1	13.6
1977	523	214	310	18.9	17.9	17.5
1978	441	253	187	17.8	22.5	12.4
1979	621	315	306	18.4	30.0	17.9
1980	531	280	250	19.3	27.1	13.9
1981	400	198	203	18.2	18.7	13.4
1982	333	188	145	17.7	17.9	9.0
1983	383	211	172	18.8	20.9	9.1
1984	361	220	142	17.7	21.8	8.9
1985	310	148	163	19.3	14.8	9.5
1986	313	177	137	18.5	18.3	8.6
1987	384	235	149	17.5	22.7	9.8
1988	433	247	186	17.7	25.2	13.5
1989	335	164	171	17.6	16.5	13.4
1990	320	158	161	18.5	15.7	11.5
1991	293	168	125	18.4	16.5	6.4
1992	396	246	150	17.2	24.3	10.8
1993	365	216	149	18.1	21.4	10.0
1994	362	244	119	16.8	22.9	9.4
1995	415	238	177	17.2	20.3	13.9
1996	410	235	174	17.4	18.2	12.2
1997	464	277	188	16.8	20.4	15.3
1998	525	296	229	17.9	21.4	16.9
1999	554	361	193	16.0	24.4	15.6
2000	656	440	215	16.8	30.9	14.1
2001	632	417	215	16.5	31.6	16.2
2002²	548	409	139	15.7	31.2	10.5
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.30A Numbers (in Thousands) of Males Who First Used Pain Relievers Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	38	38	*	*	*	*
1966	*	*	*	*	*	*
1967	54	*	39	23.0	*	3.0
1968	139	63	76	18.9	*	6.8
1969	229	124	105	19.2	10.7	7.3
1970	220	66	154	22.2	5.2	8.4
1971	276	161	115	17.2	13.4	8.7
1972	208	81	127	20.0	6.7	7.6
1973	237	111	126	18.7	9.1	8.3
1974	285	112	172	20.4	9.0	8.1
1975	282	113	169	19.0	9.2	10.7
1976	300	92	208	20.5	8.1	11.9
1977	371	100	271	21.0	8.6	15.3
1978	283	95	187	20.0	8.3	11.1
1979	297	118	180	19.6	10.9	10.3
1980	328	129	199	21.3	11.4	7.3
1981	261	84	177	21.2	7.8	8.5
1982	262	102	161	20.3	9.1	7.6
1983	337	77	260	22.2	7.3	14.0
1984	300	90	211	23.0	8.4	9.3
1985	297	69	228	21.1	6.1	12.3
1986	306	64	242	23.1	6.2	12.3
1987	373	75	298	24.3	6.4	12.1
1988	319	67	252	23.9	6.4	10.5
1989	366	100	266	22.8	10.0	14.1
1990	320	82	239	23.0	7.8	10.5
1991	320	97	223	22.6	9.1	10.7
1992	448	82	366	26.0	7.2	13.3
1993	370	112	258	21.6	10.1	14.9
1994	512	162	349	22.4	14.1	15.2
1995	479	166	313	21.4	13.1	17.8
1996	582	213	369	20.7	17.4	23.0
1997	716	268	448	20.5	21.6	26.1
1998	897	321	576	22.5	25.1	29.2
1999	1,027	423	604	20.8	32.9	35.2
2000	1,261	497	764	20.9	39.8	43.6
2001	1,249	564	685	20.4	46.0	40.0
2002²	1,102	522	580	20.2	43.0	31.6
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.31A Numbers (in Thousands) of Males Who First Used Tranquilizers Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	49	*	49	*	*	*
1968	42	*	*	*	*	*
1969	142	92	51	17.8	7.9	3.7
1970	145	52	93	20.4	4.6	5.6
1971	151	82	69	17.6	7.1	4.5
1972	217	108	109	18.2	9.2	7.1
1973	270	70	199	21.4	6.1	10.3
1974	278	143	135	17.9	12.3	9.1
1975	328	103	225	20.9	8.9	11.2
1976	292	116	176	19.3	9.6	10.4
1977	283	105	178	21.0	9.2	9.4
1978	262	55	207	20.7	5.0	11.4
1979	260	127	132	19.7	11.5	7.5
1980	228	76	153	20.4	7.2	8.7
1981	216	77	139	20.8	7.5	7.8
1982	256	58	198	22.1	5.7	10.2
1983	212	32	180	21.2	2.3	10.1
1984	182	37	145	21.8	3.6	6.9
1985	213	53	161	24.0	5.2	6.3
1986	209	54	155	26.4	5.5	5.7
1987	200	28	172	24.0	2.8	7.7
1988	223	49	175	23.6	4.9	8.7
1989	221	41	180	23.9	4.2	8.9
1990	207	55	152	24.2	5.9	7.3
1991	194	38	156	22.7	3.8	7.1
1992	211	45	167	24.4	3.9	6.5
1993	270	63	207	24.5	6.0	8.5
1994	232	59	173	21.9	5.7	8.9
1995	220	84	136	21.2	7.6	7.5
1996	295	92	203	21.6	7.9	10.9
1997	386	108	278	23.3	9.0	13.3
1998	493	154	339	22.9	12.8	16.2
1999	444	158	286	22.1	13.0	14.6
2000	677	213	464	23.3	17.2	21.3
2001	562	198	364	21.5	15.7	19.5
2002²	486	167	318	20.7	13.3	18.0
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.32A Numbers (in Thousands) of Males Who First Used Stimulants Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	110	*	69	19.5	*	*
1966	119	*	99	19.2	*	10.2
1967	123	67	57	19.5	6.2	4.1
1968	189	63	126	19.1	5.8	11.4
1969	267	103	164	19.1	9.2	13.0
1970	328	150	178	18.8	13.3	14.5
1971	446	151	295	19.1	12.9	21.2
1972	425	163	261	18.8	13.9	19.1
1973	291	112	179	19.5	9.7	11.9
1974	295	117	178	18.6	10.1	13.3
1975	360	131	228	19.7	11.4	14.8
1976	373	156	217	19.7	13.7	13.9
1977	361	150	211	18.7	13.2	14.7
1978	328	134	193	19.1	12.3	12.9
1979	366	147	218	18.5	13.8	14.5
1980	395	144	251	19.5	13.8	16.7
1981	375	109	266	20.6	10.7	15.2
1982	348	162	185	19.2	15.4	11.0
1983	272	51	222	21.5	5.0	11.7
1984	247	84	163	20.4	8.5	9.2
1985	226	71	155	20.8	7.1	8.9
1986	170	77	94	18.6	7.8	6.0
1987	235	70	164	21.6	7.2	8.8
1988	176	71	105	19.5	7.5	6.4
1989	196	45	152	21.0	4.4	10.2
1990	185	80	105	20.4	8.5	5.9
1991	120	41	79	19.8	3.7	5.0
1992	163	68	95	21.6	6.8	5.1
1993	218	81	137	19.6	8.1	9.5
1994	214	94	120	19.3	8.8	7.2
1995	310	125	185	20.8	11.3	11.0
1996	316	121	196	20.3	10.4	11.1
1997	321	143	178	19.9	12.2	11.8
1998	395	165	230	20.4	13.6	12.1
1999	439	198	240	20.0	15.6	13.5
2000	448	189	259	20.5	14.6	13.7
2001	401	192	209	18.7	15.3	13.3
2002²	329	174	155	18.2	13.5	9.3
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.33A Numbers (in Thousands) of Males Who First Used Methamphetamines Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	60	*	50	*	*	5.1
1967	68	37	*	18.0	3.4	*
1968	69	42	27	18.0	3.8	2.4
1969	181	97	85	18.6	8.7	6.1
1970	175	66	109	19.2	5.8	8.3
1971	393	110	282	19.3	9.3	20.2
1972	211	74	137	18.3	6.3	10.7
1973	269	89	179	20.0	7.7	10.7
1974	238	94	143	19.1	8.1	10.2
1975	256	78	178	19.7	6.7	11.9
1976	244	116	128	19.4	10.0	8.1
1977	261	112	148	18.9	9.9	10.0
1978	167	56	111	19.8	5.1	7.0
1979	278	119	159	18.7	11.0	9.9
1980	245	105	139	18.7	9.9	8.3
1981	220	61	159	20.4	5.9	8.6
1982	244	80	164	19.7	7.8	10.2
1983	216	39	177	21.2	3.9	9.6
1984	208	64	144	20.1	6.4	8.2
1985	192	63	129	20.7	6.3	7.1
1986	178	69	108	19.4	7.1	6.7
1987	209	52	157	21.7	5.4	8.1
1988	154	44	110	21.4	4.6	6.2
1989	165	33	133	21.9	3.3	8.2
1990	112	26	86	22.3	2.8	4.5
1991	122	30	92	21.5	3.1	5.4
1992	100	32	68	20.0	3.1	4.5
1993	180	57	123	20.6	5.7	7.9
1994	154	48	105	20.0	4.7	6.7
1995	192	63	129	21.5	5.7	7.2
1996	190	66	123	21.3	5.7	6.6
1997	195	68	127	20.7	5.9	6.7
1998	228	86	142	22.7	7.3	5.3
1999	215	76	140	20.9	6.2	7.9
2000	192	74	118	20.6	6.0	5.7
2001	195	75	120	20.2	5.9	6.7
2002²	165	66	99	20.1	5.1	4.9
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.34A Numbers (in Thousands) of Males Who First Used Sedatives Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	35	*	*	*	*	*
1966	36	*	*	*	*	*
1967	74	33	41	19.3	3.1	3.3
1968	105	39	66	19.2	3.6	5.0
1969	171	108	63	17.4	9.7	5.4
1970	173	91	82	19.1	8.1	5.0
1971	306	150	155	18.3	12.9	11.4
1972	297	113	185	18.0	9.7	14.3
1973	312	162	150	18.6	13.4	10.2
1974	364	151	214	18.6	12.9	14.8
1975	297	113	185	19.4	9.8	12.4
1976	307	169	139	18.3	14.8	9.0
1977	318	83	235	19.9	7.4	14.4
1978	219	117	101	18.1	10.7	6.0
1979	315	129	186	18.5	12.1	12.7
1980	225	89	136	19.0	8.6	8.3
1981	221	77	144	20.6	7.5	8.0
1982	168	62	105	19.1	6.0	6.3
1983	176	38	138	20.6	3.8	7.7
1984	99	24	75	21.0	2.3	4.5
1985	77	*	50	20.7	*	2.6
1986	48	*	38	24.2	*	1.9
1987	67	*	61	28.5	*	1.4
1988	39	*	33	23.1	*	1.4
1989	37	14	23	23.5	*	*
1990	43	*	36	23.4	*	1.8
1991	42	13	29	22.8	1.4	1.3
1992	55	26	29	22.5	2.4	1.4
1993	55	20	35	21.8	2.0	1.9
1994	69	14	54	23.4	1.2	2.0
1995	50	17	33	20.5	1.5	1.9
1996	60	22	38	19.9	1.7	2.2
1997	87	37	51	21.8	3.0	2.0
1998	74	26	47	23.3	2.0	2.4
1999	90	31	60	24.6	2.3	2.2
2000	112	40	73	22.3	2.9	2.7
2001	93	33	60	23.4	2.2	2.2
2002²	52	42	10	15.6	3.3	0.6
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.35A Numbers (in Thousands) of Males Who First Used Alcohol in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	1,803	1,204	599	16.5	143.7	293.4
1966	1,554	1,111	443	15.9	133.0	230.1
1967	1,838	1,186	652	16.4	139.4	323.7
1968	1,882	1,405	477	15.7	164.6	219.2
1969	2,041	1,334	708	16.3	156.0	334.5
1970	1,973	1,372	601	16.0	153.1	332.8
1971	1,998	1,408	590	16.1	155.5	323.3
1972	2,160	1,648	512	15.6	186.0	293.4
1973	2,030	1,466	565	15.8	172.9	339.0
1974	1,949	1,508	441	15.5	181.7	276.6
1975	2,001	1,459	542	15.8	175.6	322.7
1976	1,890	1,394	496	15.6	171.2	298.1
1977	1,887	1,463	424	15.4	184.2	267.6
1978	1,909	1,430	479	15.5	186.5	292.6
1979	1,850	1,489	361	15.3	207.1	222.7
1980	1,561	1,192	369	15.6	166.9	217.2
1981	1,647	1,293	353	15.4	181.0	203.2
1982	1,801	1,344	457	15.7	185.6	263.2
1983	1,529	1,146	383	15.7	159.1	234.0
1984	1,620	1,278	342	15.2	178.1	208.5
1985	1,630	1,195	435	15.8	173.5	266.0
1986	1,523	1,264	259	15.0	185.4	152.0
1987	1,547	1,116	430	16.0	168.4	252.4
1988	1,424	1,074	351	15.5	162.4	196.2
1989	1,446	1,020	426	16.1	155.4	228.7
1990	1,351	990	361	15.7	143.6	199.8
1991	1,460	1,003	457	16.0	140.3	257.2
1992	1,600	1,166	434	16.3	158.6	229.8
1993	1,540	1,096	444	15.8	144.3	240.1
1994	1,511	1,169	342	15.1	142.9	193.2
1995	1,555	1,156	399	15.6	139.0	205.2
1996	1,654	1,192	462	15.8	139.2	229.9
1997	1,808	1,315	493	15.8	147.1	242.8
1998	1,984	1,415	569	15.9	155.7	272.5
1999	2,090	1,558	532	15.7	168.6	253.1
2000	2,474	1,858	615	15.7	220.3	298.5
2001²	2,458	1,860	597	15.8	219.4	282.5
2002²	--	--	566	--	197.9	278.8
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.36A Numbers (in Thousands) of Males Who First Used Alcohol in the United States by Underage and Legal Drinking Age Groups, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	1,803	1,618	185	16.5	172.1	193.9
1966	1,554	1,486	68	15.9	158.7	82.4
1967	1,838	1,663	175	16.4	176.0	177.3
1968	1,882	1,721	161	15.7	179.3	142.5
1969	2,041	1,867	175	16.3	195.9	147.0
1970	1,973	1,752	221	16.0	178.0	287.0
1971	1,998	1,742	256	16.1	176.9	280.5
1972	2,160	2,000	159	15.6	205.7	177.7
1973	2,030	1,921	110	15.8	207.2	126.2
1974	1,949	1,820	129	15.5	201.5	154.2
1975	2,001	1,847	154	15.8	202.5	199.3
1976	1,890	1,764	126	15.6	196.2	164.9
1977	1,887	1,779	108	15.4	202.3	157.9
1978	1,909	1,796	113	15.5	211.3	147.3
1979	1,850	1,781	68	15.3	222.1	84.7
1980	1,561	1,453	108	15.6	181.8	128.8
1981	1,647	1,561	86	15.4	194.9	97.5
1982	1,801	1,650	151	15.7	205.5	165.6
1983	1,529	1,362	167	15.7	169.8	217.8
1984	1,620	1,547	73	15.2	192.9	99.5
1985	1,630	1,490	140	15.8	195.6	160.8
1986	1,523	1,459	64	15.0	191.2	64.6
1987	1,547	1,357	190	16.0	182.7	219.8
1988	1,424	1,298	127	15.5	171.4	156.4
1989	1,446	1,292	154	16.1	172.2	175.2
1990	1,351	1,214	137	15.7	154.8	171.9
1991	1,460	1,237	223	16.0	153.9	276.3
1992	1,600	1,409	192	16.3	170.2	207.4
1993	1,540	1,362	178	15.8	159.8	212.0
1994	1,511	1,403	108	15.1	153.6	147.8
1995	1,555	1,404	152	15.6	150.1	180.1
1996	1,654	1,504	150	15.8	157.6	160.7
1997	1,808	1,620	188	15.8	162.5	209.0
1998	1,984	1,802	182	15.9	178.2	188.7
1999	2,090	1,908	183	15.7	185.5	186.1
2000	2,474	2,251	223	15.7	235.2	249.5
2001²	2,458	2,232	225	15.8	233.0	225.0
2002²	--	--	199	--	215.3	202.3
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.37A Numbers (in Thousands) of Males Who First Used Any Cigarettes in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	1,453	1,224	229	14.1	154.1	106.0
1966	1,413	1,114	299	14.6	145.2	132.8
1967	1,603	1,258	345	14.7	164.9	146.2
1968	1,551	1,242	308	14.6	156.8	120.8
1969	1,609	1,310	299	15.0	171.1	110.0
1970	1,674	1,390	284	14.5	170.1	107.4
1971	1,463	1,243	220	14.3	150.3	76.7
1972	1,594	1,376	218	14.2	170.3	76.4
1973	1,532	1,323	208	14.1	154.4	65.2
1974	1,506	1,266	240	14.4	153.5	72.4
1975	1,598	1,333	264	14.7	160.2	69.6
1976	1,539	1,299	240	14.5	167.6	65.3
1977	1,432	1,202	230	14.5	155.9	59.1
1978	1,452	1,201	251	14.5	157.2	62.9
1979	1,223	959	264	15.0	125.3	62.8
1980	1,225	927	298	15.3	120.9	70.9
1981	1,210	937	273	15.1	127.7	69.4
1982	1,267	1,020	246	15.1	138.6	59.8
1983	1,270	1,017	253	15.0	137.5	57.1
1984	1,241	980	261	15.0	130.0	59.2
1985	1,228	944	284	15.4	129.7	63.6
1986	1,229	959	270	15.4	128.5	60.0
1987	1,230	915	315	15.5	124.9	72.3
1988	1,227	909	318	15.5	119.8	71.3
1989	1,264	934	330	15.7	129.5	76.2
1990	1,268	934	334	15.4	126.9	76.0
1991	1,273	898	375	15.5	115.7	88.0
1992	1,340	956	385	15.5	119.2	83.6
1993	1,393	1,093	300	14.9	138.4	70.2
1994	1,509	1,095	413	15.3	129.8	94.9
1995	1,538	1,228	310	14.9	144.7	69.2
1996	1,643	1,268	375	15.1	146.5	91.7
1997	1,724	1,268	456	15.6	141.0	104.6
1998	1,607	1,232	375	15.7	138.7	87.8
1999	1,599	1,238	361	15.4	142.9	88.8
2000	1,482	1,160	322	15.5	133.0	78.3
2001²	1,377	1,049	328	16.1	117.6	72.0
2002²	--	--	352	--	91.3	65.8
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.38A Numbers (in Thousands) of Males Who Began Daily Cigarette Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	709	337	372	18.0	34.9	71.9
1966	1,034	645	389	17.2	67.0	72.5
1967	1,013	509	504	17.4	50.4	93.4
1968	919	402	518	17.4	36.9	86.9
1969	1,084	611	474	17.4	59.0	77.2
1970	870	487	383	17.1	47.0	58.2
1971	966	534	432	17.2	49.9	62.0
1972	1,069	586	483	17.0	54.8	67.2
1973	999	507	492	17.2	44.3	64.5
1974	972	580	392	17.2	53.5	47.8
1975	1,080	661	418	16.9	61.1	50.3
1976	922	520	402	17.3	48.5	43.4
1977	875	508	367	17.2	48.1	40.2
1978	910	517	393	17.3	50.5	38.7
1979	757	410	347	17.5	41.2	36.0
1980	748	451	298	17.1	45.2	29.8
1981	654	367	287	17.2	36.8	29.1
1982	776	417	359	17.7	42.0	33.4
1983	749	354	395	18.1	36.6	35.3
1984	706	355	351	17.7	37.0	34.3
1985	690	386	304	17.4	39.3	28.9
1986	660	359	301	18.0	39.4	26.9
1987	795	415	380	17.9	45.5	35.3
1988	643	320	323	18.4	35.3	28.6
1989	678	330	348	18.1	36.7	33.0
1990	722	340	382	18.9	38.2	33.0
1991	768	335	433	18.1	37.3	41.3
1992	785	384	401	18.5	41.5	35.1
1993	713	384	329	17.7	40.1	30.6
1994	782	426	356	18.1	43.3	32.3
1995	771	403	369	17.8	38.8	36.5
1996	996	517	479	19.1	49.1	41.7
1997	1,088	560	528	18.6	51.6	50.1
1998	984	522	462	18.0	46.9	48.6
1999	865	490	376	17.4	43.7	40.0
2000	998	544	454	18.3	47.3	39.7
2001	834	463	371	18.5	40.1	34.2
2002²	674	384	290	19.0	32.5	26.8
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.39A Numbers (in Thousands) of Males Who First Used Smokeless Tobacco in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	536	344	192	17.5	32.9	18.0
1966	360	162	198	19.3	14.0	18.2
1967	572	277	295	18.3	21.7	26.0
1968	443	256	187	17.1	21.8	18.5
1969	534	321	213	17.6	26.3	17.0
1970	565	307	258	16.9	22.5	23.3
1971	567	289	278	18.2	20.0	19.0
1972	665	378	287	17.8	29.0	20.4
1973	759	443	316	17.3	35.5	24.3
1974	780	499	282	16.7	37.5	22.1
1975	811	525	285	16.6	38.2	20.4
1976	833	532	301	17.3	45.3	18.0
1977	1,080	642	438	17.5	55.1	29.4
1978	1,173	730	443	16.8	63.2	29.7
1979	1,270	838	433	17.4	80.5	24.4
1980	1,100	717	383	17.0	71.6	26.5
1981	1,183	716	467	17.3	74.1	32.6
1982	1,244	749	495	17.8	76.6	34.0
1983	1,061	721	341	17.1	78.4	25.9
1984	1,274	830	444	17.5	99.2	33.8
1985	980	727	252	16.0	87.7	20.9
1986	1,040	713	327	16.7	88.8	31.6
1987	793	508	285	17.6	63.6	26.1
1988	864	556	308	18.1	66.9	27.5
1989	778	486	292	17.2	59.3	32.4
1990	798	508	289	18.0	60.3	25.3
1991	823	497	326	18.5	57.5	29.6
1992	881	577	304	17.9	64.5	31.1
1993	727	504	223	16.3	54.2	26.5
1994	802	519	283	18.7	52.9	24.4
1995	803	549	254	17.4	53.2	23.4
1996	812	547	265	17.3	50.6	27.5
1997	819	544	275	18.2	50.2	26.0
1998	754	483	271	17.4	43.1	25.4
1999	791	524	266	17.4	45.4	25.5
2000	851	506	345	18.3	44.1	29.7
2001	790	455	334	18.4	40.1	28.1
2002²	770	478	292	18.6	41.1	21.2
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.40A Numbers (in Thousands) of Males Who First Used Cigars in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	898	310	587	19.9	29.2	83.9
1966	1,171	559	612	18.0	54.6	101.3
1967	1,074	444	630	19.0	42.8	90.5
1968	1,084	420	664	19.2	40.6	91.9
1969	1,330	546	784	20.2	48.1	88.1
1970	977	371	605	19.4	32.3	75.4
1971	1,027	390	636	19.5	35.2	75.8
1972	1,261	505	755	18.9	44.3	89.6
1973	1,262	470	792	18.7	41.8	98.3
1974	1,059	422	638	19.3	36.0	69.1
1975	1,168	431	737	19.1	38.9	77.4
1976	1,136	427	710	19.5	39.4	71.1
1977	960	363	597	19.8	32.9	55.6
1978	1,011	351	661	19.8	32.4	63.3
1979	1,083	373	710	20.3	34.2	62.1
1980	1,080	330	750	20.7	31.4	66.9
1981	929	279	650	20.3	26.1	58.2
1982	1,120	301	819	22.1	29.9	64.0
1983	959	317	641	20.6	31.4	49.5
1984	964	266	698	20.4	27.5	61.9
1985	962	327	635	20.1	33.5	55.6
1986	921	305	616	20.7	32.6	49.3
1987	1,062	249	813	21.8	26.3	65.8
1988	1,185	307	879	21.2	32.4	73.0
1989	1,262	283	979	23.4	29.1	68.6
1990	1,132	271	861	21.6	29.3	72.8
1991	1,250	367	883	21.2	38.4	73.4
1992	1,370	373	998	21.7	38.2	81.7
1993	1,522	445	1,076	22.5	45.5	83.8
1994	1,612	571	1,041	21.2	57.5	85.5
1995	1,734	658	1,075	20.6	64.1	96.0
1996	1,969	701	1,268	20.9	65.8	121.2
1997	2,164	780	1,384	21.7	74.2	124.7
1998	2,077	917	1,160	20.6	84.6	112.5
1999	1,989	887	1,102	20.1	83.0	115.8
2000	1,958	967	991	20.1	91.0	101.6
2001	1,880	944	936	20.9	90.0	97.9
2002²	1,660	904	757	18.6	83.6	85.1
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.41A Numbers (in Thousands) of Females Who First Used Marijuana in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	257	99	158	18.7	9.0	15.7
1966	256	53	203	20.8	4.7	16.6
1967	454	187	267	19.6	17.6	18.7
1968	760	296	463	19.0	26.4	33.5
1969	902	362	540	18.9	32.3	41.5
1970	1,038	419	619	19.2	37.2	49.0
1971	1,234	535	699	18.6	47.2	55.4
1972	1,400	728	672	18.5	65.3	51.4
1973	1,482	718	764	19.0	61.2	54.7
1974	1,488	789	699	18.9	70.9	52.1
1975	1,668	891	776	18.5	80.8	62.7
1976	1,714	1,024	690	18.7	95.7	51.2
1977	1,741	873	868	19.6	85.3	63.2
1978	1,751	1,002	749	19.0	99.6	62.8
1979	1,440	787	654	19.0	81.1	56.8
1980	1,351	809	542	19.1	83.1	45.2
1981	1,283	727	557	18.6	77.6	53.8
1982	1,120	621	499	20.3	65.3	37.5
1983	1,169	684	485	18.6	74.3	47.5
1984	1,016	662	355	18.3	71.9	32.6
1985	1,064	591	473	18.4	65.1	49.2
1986	991	528	463	18.3	58.8	51.5
1987	871	509	362	18.1	55.5	39.8
1988	860	526	334	17.7	60.8	38.9
1989	814	414	399	19.1	47.1	41.1
1990	745	407	338	19.2	46.1	33.5
1991	861	421	440	19.3	46.5	44.5
1992	883	501	383	17.8	53.4	42.1
1993	993	607	386	17.0	64.4	42.2
1994	1,185	766	418	16.7	80.6	46.7
1995	1,308	814	494	17.4	84.6	52.0
1996	1,188	731	457	17.3	75.2	49.1
1997	1,273	805	467	17.9	82.9	47.5
1998	1,165	771	394	17.3	78.1	44.8
1999	1,323	820	503	17.7	81.6	56.5
2000	1,363	947	417	16.8	94.2	49.5
2001	1,415	945	470	17.2	94.8	54.4
2002²	1,356	895	461	17.9	89.6	48.6
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.42A Numbers (in Thousands) of Females Who First Used Cocaine in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	*	*	*	*	*	*
1969	53	*	37	20.0	*	2.2
1970	112	*	79	19.1	*	6.1
1971	47	*	43	20.2	*	2.6
1972	125	40	85	19.7	3.3	4.8
1973	187	66	121	21.3	5.3	6.3
1974	354	88	266	22.2	7.1	13.5
1975	353	95	258	20.5	7.4	14.0
1976	444	57	386	21.3	4.6	23.3
1977	393	116	276	20.4	9.5	15.3
1978	557	91	466	21.2	7.6	26.9
1979	466	99	368	20.5	8.5	21.4
1980	655	124	531	22.5	11.0	24.5
1981	663	132	532	21.4	12.1	27.6
1982	653	150	503	21.4	13.8	27.5
1983	654	112	542	22.2	10.5	28.5
1984	609	76	533	23.4	7.2	25.6
1985	662	147	516	22.1	14.3	25.3
1986	487	98	390	22.6	9.7	20.7
1987	502	123	379	21.7	12.3	22.5
1988	464	64	400	22.7	6.4	20.8
1989	446	82	363	22.5	8.5	18.9
1990	382	92	290	22.7	9.6	15.2
1991	290	57	233	22.9	5.9	12.3
1992	323	74	249	24.1	7.4	10.6
1993	249	72	177	21.2	6.9	10.5
1994	267	62	205	22.5	5.4	11.4
1995	323	108	215	20.2	10.1	13.5
1996	339	137	202	20.6	12.4	10.8
1997	334	127	207	19.7	11.2	13.8
1998	372	112	260	21.2	9.7	15.1
1999	404	140	264	21.1	12.0	15.0
2000	383	128	255	20.1	10.7	16.8
2001	499	188	311	20.9	15.5	18.6
2002²	476	159	317	20.4	13.2	17.4
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.43A Numbers (in Thousands) of Females Who First Used Crack in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	*	*	*	*	*	*
1969	*	*	*	*	*	*
1970	*	*	*	*	*	*
1971	*	*	*	*	*	*
1972	*	*	*	*	*	*
1973	*	*	*	*	*	*
1974	*	*	*	*	*	*
1975	*	*	*	*	*	*
1976	*	*	*	*	*	*
1977	32	*	25	*	*	1.6
1978	*	*	*	*	*	*
1979	34	*	33	19.9	*	2.0
1980	28	*	21	20.7	*	1.2
1981	53	*	52	23.3	*	3.0
1982	47	*	32	22.2	*	1.0
1983	82	*	73	22.8	*	2.9
1984	104	*	100	23.9	*	3.6
1985	117	*	105	25.2	*	3.6
1986	100	*	86	25.5	*	2.6
1987	85	22	63	21.5	2.2	3.5
1988	120	21	99	24.9	1.9	3.6
1989	161	*	157	25.2	*	5.8
1990	137	*	127	25.4	*	3.9
1991	105	*	96	26.0	*	3.2
1992	148	24	124	26.3	2.4	3.3
1993	122	18	103	27.8	1.8	2.5
1994	117	18	99	25.9	1.4	3.6
1995	143	23	120	25.4	1.9	4.6
1996	152	32	120	24.3	2.8	3.9
1997	135	32	104	24.9	2.8	4.4
1998	119	27	92	23.9	2.3	3.8
1999	149	26	123	26.3	2.2	3.3
2000	170	35	135	26.9	2.8	4.3
2001	145	32	113	27.4	2.7	3.2
2002²	123	40	83	21.7	3.2	3.2
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.44A Numbers (in Thousands) of Females Who First Used Heroin in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	*	*	*	*	*	*
1969	*	*	*	*	*	*
1970	*	*	*	*	*	*
1971	*	*	*	*	*	*
1972	42	13	*	19.9	1.1	*
1973	43	21	*	17.5	1.6	*
1974	58	*	32	19.2	*	2.2
1975	26	*	14	*	*	0.9
1976	*	*	*	*	*	*
1977	*	*	*	*	*	*
1978	29	*	*	*	*	*
1979	*	*	*	*	*	*
1980	16	*	15	*	*	*
1981	53	*	40	20.7	*	2.3
1982	*	*	*	*	*	*
1983	24	*	22	*	*	1.3
1984	43	*	34	22.8	*	1.1
1985	*	*	*	*	*	*
1986	19	*	*	*	*	*
1987	33	*	32	25.1	*	1.7
1988	15	*	15	*	*	1.0
1989	35	*	33	24.2	*	*
1990	*	*	*	*	*	*
1991	*	*	*	*	*	*
1992	24	*	20	23.2	*	0.7
1993	27	*	24	28.6	*	*
1994	32	12	*	24.8	1.1	*
1995	49	11	38	23.6	0.9	1.2
1996	43	14	30	23.6	1.2	*
1997	40	18	22	23.6	1.5	0.7
1998	58	13	45	21.5	1.1	2.7
1999	45	19	26	20.1	1.6	1.2
2000	57	26	31	18.6	1.9	1.9
2001	73	24	49	22.6	2.0	2.0
2002²	43	13	30	22.3	1.1	0.6
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.45A Numbers (in Thousands) of Females Who First Used Hallucinogens in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	68	*	*	*	*	*
1967	74	*	55	19.7	*	3.8
1968	139	79	59	18.0	7.1	4.7
1969	381	139	242	19.4	12.0	17.6
1970	311	161	150	17.7	13.9	11.8
1971	426	170	256	18.7	14.6	17.8
1972	422	208	215	18.2	17.4	14.9
1973	335	214	121	17.1	16.8	8.9
1974	378	214	164	18.1	16.9	10.6
1975	381	206	175	18.2	16.9	10.6
1976	386	188	198	19.2	15.6	12.0
1977	344	162	182	18.4	13.6	12.2
1978	425	211	215	18.2	17.5	13.6
1979	346	198	147	18.1	17.4	9.0
1980	363	162	201	18.4	14.4	13.2
1981	441	178	263	19.4	16.6	15.9
1982	441	191	249	21.4	17.7	12.0
1983	247	83	164	19.0	7.8	11.2
1984	306	82	225	20.2	7.8	13.2
1985	332	151	181	19.1	14.1	11.5
1986	369	134	235	19.9	13.3	13.7
1987	327	155	172	18.8	15.6	10.9
1988	233	105	128	18.7	10.9	8.9
1989	325	131	194	18.6	13.7	13.1
1990	271	112	159	20.0	11.9	9.9
1991	307	134	173	19.1	13.8	11.1
1992	312	139	173	19.4	13.9	10.3
1993	322	147	175	19.6	14.6	9.6
1994	369	195	173	18.2	18.7	11.8
1995	430	227	202	18.1	21.6	14.3
1996	448	237	211	18.1	21.8	15.4
1997	486	253	233	18.5	22.7	17.4
1998	509	214	295	19.2	18.7	20.0
1999	616	289	326	18.5	25.2	24.7
2000	733	320	413	19.1	27.1	29.8
2001	800	366	434	19.4	31.1	28.8
2002²	555	288	267	18.6	24.0	16.9
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.46A Numbers (in Thousands) of Females Who First Used LSD in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	63	*	43	*	*	2.8
1968	111	70	40	16.8	6.3	*
1969	289	100	189	19.2	8.6	14.5
1970	249	131	118	17.5	11.3	9.3
1971	343	113	230	19.2	9.6	15.7
1972	328	197	131	17.3	16.5	8.6
1973	306	172	134	18.6	13.6	8.6
1974	304	183	121	17.5	15.0	8.8
1975	295	188	107	18.2	15.3	5.6
1976	203	98	105	18.1	8.0	6.3
1977	280	125	155	19.4	10.4	9.6
1978	292	111	181	18.9	9.3	10.6
1979	284	162	122	17.7	14.1	7.6
1980	231	115	116	18.3	10.3	7.1
1981	352	163	188	19.3	15.1	11.0
1982	309	140	169	20.1	12.8	8.5
1983	198	70	128	19.5	6.5	8.1
1984	226	78	148	18.6	7.4	9.5
1985	241	107	134	19.9	9.7	7.2
1986	216	96	120	19.4	9.5	7.2
1987	250	161	89	17.9	16.2	5.6
1988	157	74	83	18.6	7.6	5.3
1989	231	101	130	18.4	10.5	7.9
1990	224	103	121	19.2	10.8	7.2
1991	252	125	127	18.2	13.0	9.2
1992	262	127	135	18.5	12.8	9.0
1993	226	112	114	18.5	11.2	7.0
1994	292	170	122	18.0	16.2	8.2
1995	329	188	141	17.4	17.8	10.5
1996	362	196	166	18.0	17.9	11.7
1997	338	206	132	17.6	18.5	10.0
1998	293	154	139	18.3	13.5	9.8
1999	308	165	143	17.5	14.4	10.8
2000	366	190	176	18.2	16.0	11.8
2001	277	150	127	18.0	12.6	8.8
2002²	113	71	42	17.0	5.9	3.0
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

Table 4.47A Numbers (in Thousands) of Females Who First Used PCP in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR	NUMBER OF INITIATES (1,000s)	MEAN AGE	AGE-SPECIFIC RATES¹
1965	*	*	*	*	*	*
1966	*	*	*	*	*	*
1967	*	*	*	*	*	*
1968	*	*	*	*	*	*
1969	46	29	*	*	2.3	*
1970	63	38	*	16.9	3.2	*
1971	58	25	33	18.5	2.1	2.4
1972	146	90	*	19.4	7.4	2.1
1973	168	82	86	18.3	6.7	5.9
1974	125	72	53	17.1	5.8	3.7
1975	175	92	83	18.6	7.3	3.8
1976	199	123	76	18.4	9.9	3.6
1977	132	53	78	19.7	4.4	3.8
1978	160	88	72	18.8	7.3	3.7
1979	117	60	58	18.9	5.1	2.8
1980	91	33	58	19.9	2.9	3.2
1981	107	30	77	20.3	2.8	4.2
1982	67	22	46	19.3	2.0	2.6
1983	40	21	*	18.8	1.9	*
1984	36	*	*	*	*	*
1985	29	*	*	19.4	*	*
1986	58	29	30	17.5	2.8	*
1987	32	10	22	19.9	1.0	1.3
1988	28	*	*	16.4	*	*
1989	42	25	*	17.4	2.6	*
1990	41	21	20	22.6	2.0	*
1991	17	*	*	18.7	*	*
1992	33	19	14	17.9	1.9	1.0
1993	23	11	*	20.6	1.1	*
1994	30	20	10	16.4	1.9	0.7
1995	70	30	40	18.0	2.8	2.9
1996	74	37	37	18.8	3.2	1.7
1997	59	34	25	17.2	2.8	1.7
1998	37	18	19	18.3	1.6	1.1
1999	60	38	22	16.8	3.2	1.6
2000	72	53	19	16.2	4.2	1.3
2001	80	48	32	17.0	3.9	2.1
2002²	43	36	6	15.5	3.0	0.4
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

SAMHSA, an agency in the Department of Health and Human Services, is the Federal Government's lead agency for improving the quality and availability of substance abuse prevention, addiction treatment, and mental health services in the United States.

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YEAR	NUMBER OF INITIATES (1,000s)			MEAN AGE	AGE-SPECIFIC RATES¹
YEAR	All Ages	Under 18	18 or Older	MEAN AGE	12–17	18–25
1965	794	304	490	18.7	14.3	24.5
1966	785	268	517	19.4	11.9	23.5
1967	1,317	463	854	19.2	21.3	35.3
1968	1,961	757	1,204	18.8	34.2	50.6
1969	2,627	985	1,642	19.0	45.3	71.2
1970	2,858	1,306	1,551	18.6	60.0	71.0
1971	2,951	1,333	1,619	18.4	60.2	73.6
1972	3,134	1,666	1,468	18.3	76.5	63.0
1973	3,460	1,735	1,725	18.8	79.0	76.1
1974	3,275	1,912	1,363	18.5	89.7	58.3
1975	3,332	1,880	1,452	18.3	89.6	66.6
1976	3,236	1,943	1,292	18.4	97.1	59.8
1977	3,327	1,891	1,436	18.6	96.5	68.2
1978	3,225	1,925	1,300	18.4	101.1	66.5
1979	3,028	1,733	1,295	19.1	91.9	61.3
1980	2,555	1,565	990	18.5	83.8	50.6
1981	2,518	1,452	1,066	18.3	80.1	58.7
1982	2,412	1,404	1,008	19.4	78.3	47.7
1983	2,365	1,500	865	18.0	83.1	48.5
1984	2,123	1,379	745	17.9	78.4	40.6
1985	2,182	1,374	809	18.0	78.7	47.6
1986	2,046	1,258	788	17.6	73.5	48.5
1987	1,809	1,116	692	17.8	64.6	43.3
1988	1,695	1,087	608	17.8	64.7	38.1
1989	1,702	994	708	18.3	58.4	41.3
1990	1,505	825	680	18.8	47.2	38.2
1991	1,765	1,042	723	17.8	58.6	42.6
1992	2,013	1,159	854	17.5	63.8	53.5
1993	2,148	1,338	810	17.2	71.9	47.6
1994	2,464	1,616	848	16.8	86.2	51.9
1995	2,698	1,726	973	17.0	90.3	58.3
1996	2,448	1,590	857	16.9	82.6	51.9
1997	2,613	1,725	889	17.2	89.0	52.0
1998	2,519	1,702	816	17.0	86.3	50.8
1999	2,715	1,728	987	17.5	86.5	59.8
2000	2,862	1,966	896	16.9	98.2	56.1
2001	2,806	1,872	934	17.3	93.6	56.3
2002²	2,573	1,763	810	17.2	87.0	49.4
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

YEAR	NUMBER OF INITIATES (1,000s)			MEAN AGE	AGE-SPECIFIC RATES¹
YEAR	All Ages	Under 21	21 or Older	MEAN AGE	12–20	21–25
1965	3,283	2,694	589	17.4	123.1	172.2
1966	2,954	2,571	383	16.9	117.2	133.9
1967	3,609	3,123	486	17.1	142.0	148.9
1968	3,648	3,149	499	17.0	141.4	134.8
1969	3,955	3,257	698	17.1	146.4	228.3
1970	4,064	3,344	720	17.0	148.5	234.0
1971	3,918	3,261	657	16.8	144.4	197.3
1972	4,320	3,617	702	16.9	163.0	232.0
1973	4,140	3,712	428	16.5	171.5	135.1
1974	4,053	3,581	472	16.6	167.5	154.5
1975	3,999	3,456	543	16.8	161.1	165.3
1976	3,900	3,426	474	16.7	163.2	142.4
1977	4,103	3,640	463	16.4	179.3	153.9
1978	3,938	3,471	467	16.3	176.3	152.9
1979	3,959	3,545	414	16.3	187.6	142.0
1980	3,596	3,168	428	16.8	171.4	127.4
1981	3,744	3,350	393	16.5	185.3	122.3
1982	3,642	3,211	431	16.6	178.2	125.5
1983	3,219	2,814	405	16.6	156.9	140.1
1984	3,407	3,022	384	16.3	172.6	136.4
1985	3,288	2,869	419	16.8	167.4	148.9
1986	3,207	2,900	307	16.0	171.5	113.4
1987	3,086	2,669	417	16.6	160.3	150.3
1988	3,046	2,638	408	16.3	157.3	164.3
1989	3,220	2,763	457	16.7	167.3	169.8
1990	2,884	2,472	412	16.5	147.7	162.3
1991	2,961	2,467	495	16.7	144.4	194.5
1992	3,182	2,647	535	16.9	149.7	189.1
1993	3,190	2,766	424	16.4	152.2	160.6
1994	3,252	2,871	381	16.0	151.9	153.5
1995	3,278	2,857	422	16.2	148.0	172.9
1996	3,462	3,011	451	16.5	152.3	165.8
1997	3,697	3,281	416	16.1	160.5	169.7
1998	3,949	3,493	455	16.5	170.8	163.1
1999	4,258	3,752	506	16.3	181.3	190.9
2000	5,079	4,526	554	16.1	231.1	235.8
2001²	5,259	4,654	605	16.2	239.2	244.4
2002²	--	--	539	--	239.4	224.6
*Low precision; no estimate reported. -- Not available. NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases. ¹ The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years. ² Estimated using 2003 data only. Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.