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Monitoring the Future -- Trends in Past Month Heroin Use
vs Marijuana Use by Young Adults (1986 - 2008)

Overview of young adult drug use trend comparisons Ages 19 to 28 Drug Use Trend Comparisons College Student Drug Use Trend Comparisons 12th Grade Student Drug Use Trend Comparisons Overview of young adult drug use trend comparisons Ages 19 to 28 Drug Use Trend Comparisons College Student Drug Use Trend Comparisons 12th Grade Student Drug Use Trend Comparisons

Source: Monitoring the Future, Vols I & II (2009)

Ratios of Heroin Use to Marijuana Use Among Young Adults -- Past Month Use (1986 - 2008)
Year Ages 19 Use to 28 College Students 12th Grade Students
1986 0.005 -- 0.009
1987 0.005 0.005 0.010
1988 0.006 0.006 0.011
1989 0.006 0.006 0.018
1990 0.007 -- 0.014
1991 -- 0.007 0.014
1992 0.008 -- 0.025
1993 0.007 -- 0.013
1994 0.007 -- 0.016
1995 0.007 0.005 0.028
1996 0.007 -- 0.023
1997 0.007 0.011 0.021
1998 0.007 0.005 0.022
1999 0.006 0.005 0.022
2000 0.006 0.010 0.032
2001 0.018 0.005 0.018
2002 -- -- 0.023
2003 0.006 -- 0.019
2004 0.006 0.005 0.025
2005 0.018 0.005 0.018
2006 -- -- 0.023
2007 0.006 -- 0.019
2008 0.006 0.005 0.025

Other Available Trend and Comparison Data
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Ratios of Heroin Use vs Marijuana Use Across Young Adult Demographics
Lifetime Ratios of Heroin Use vs Marijuana Past Year Ratios of Heroin Use vs Marijuana Comparisons Across High School Demographics

Ratios of Heroin Use vs Alcohol Use by Young Adults
Lifetime Heroin Use vs Alcohol Past Year Heroin Use vs Alcohol Past Month Heroin Use vs Alcohol

Comparison Trends by Specific Young Adult Demographics
19 to 28 Year Olds College Students 12th Grade Students

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