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Monitoring the Future -- Marijuana Use
Trends Among 10th Grade Students (1991 - 2008)

Source: Monitoring the Future (2009), Vol I, Tables 5-5a, 5-5b, and 5-5c, pp.202-213

Trends in Marijuana Use Among 10th Grade Students (1991 - 2008)
Year Lifetime Past Year Past Month
1991 23.4 16.5 8.7
1992 21.4 15.2 8.1
1993 24.4 19.2 10.9
1994 30.4 25.2 15.8
1995 34.1 28.7 17.2
1996 39.8 33.6 20.4
1997 42.3 34.8 20.5
1998 39.6 31.1 18.7
1999 40.9 32.1 19.4
2000 40.3 32.2 19.7
2001 40.1 32.7 19.8
2002 38.7 30.3 17.8
2003 36.4 28.2 17.0
2004 35.1 27.5 15.9
2005 34.1 26.6 15.2
2006 31.8 25.2 14.2
2007 31.0 24.6 14.2
2008 29.9 23.9 13.8
Averages: 34.1 27.1 16.0

Drug Use Trends Among Other MTF Demographic Groups
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8th Grade Students 12th Grade Students College Students
Age 19 to 28 Comparison of Trends Among School Age Youth Comparison of Trends Among Young Adults

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