[ythdrk6b.htm, updated 11/07]
Sex and Year
Grade
Total
9th grade
10th grade
11th grade
12th grade
Percent
S.E.
Both Sexes
2005
25.5
1.1
19.0
24.6
1.6
27.6
32.8
1.7
2003
28.3
1.0
19.8
1.2
27.4
1.5
31.8
37.2
2001
29.9
24.5
1.4
28.2
1.3
32.2
36.7
1.9
1999
31.5
21.1
34.0
41.6
2.8
1997
33.4
25.7
2.0
37.5
39.3
2.4
1995
32.6
1.8
30.3
34.9
39.0
1993
30.0
22.0
26.2
31.3
39.1
1991
22.6
27.1
36.3
2.5
2.7
Male
27.5
20.7
25.1
30.4
36.2
29.0
18.8
27.7
34.1
39.5
33.5
2.2
30.1
38.5
42.0
21.7
38.8
2.9
49.5
37.3
32.7
45.2
2.3
44.0
2.6
32.1
37.8
46.5
2.1
33.7
24.0
27.2
37.1
45.0
36.5
24.8
31.4
44.1
3.3
45.8
3.5
Female
23.5
17.3
24.1
25.0
29.2
20.9
29.4
34.5
26.4
23.0
26.3
26.1
28.1
20.2
31.1
33.9
3.0
28.6
25.8
3.7
33.6
31.6
26.0
19.7
25.3
33.0
25.9
20.4
22.3
Source: Alcohol Epidemiologic Data System. Newes-Adeyi, G.; Chen, C.M.; Williams, G.D.; and Faden, V.B. Surveillance Report #81: Trends in Underage Drinking in the United States, 1991–2005. Bethesda, MD: National Institute on Alcohol Abuse and Alcoholism, Division of Epidemiology and Prevention Research (October 2007).