[ythdrk1b.htm, dated 11/07]
Sex and Year
Grade
Total
9th grade
10th grade
11th grade
12th grade
Percent
S.E.
Both Sexes
2005
43.3
1.4
36.2
1.2
42.0
2.0
46.0
50.8
2.1
2003
44.9
43.5
1.7
47.0
55.9
1.6
2001
47.1
1.1
41.1
1.8
45.2
1.3
49.3
55.2
1.5
1999
50.0
40.6
2.2
49.7
1.9
50.9
61.7
1997
44.2
3.1
47.2
53.2
57.3
2.5
1995
51.6
45.6
49.5
2.4
53.7
56.5
1993
48.0
40.5
44.0
56.4
1991
40.9
2.6
47.8
54.5
59.9
Male
43.8
36.3
41.4
2.3
52.0
33.9
42.2
47.3
56.0
49.2
46.9
53.6
56.6
52.3
40.2
52.7
3.0
53.5
2.9
66.6
53.3
44.7
3.8
48.7
57.8
60.2
50.4
55.5
59.5
50.1
44.1
60.5
3.5
48.9
58.5
2.7
62.8
Female
42.8
42.7
49.6
45.8
38.5
46.8
45.0
40.0
45.1
53.9
47.7
41.0
48.3
56.9
43.7
3.4
45.3
3.2
2.8
49.9
48.6
51.8
45.9
48.8
41.5
46.6
50.2
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).