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Source: Monitoring the Future, Vol II (2009), Table 9-2, p. 270
Ratios of Heroin Use vs Alcohol and Marijuana Use Among College Students -- Past Year Use | ||
---|---|---|
Year | vs Alcohol | vs Marijuana |
1980 | 0.00 | 0.01 |
1981 | 0.00 | 0.00 |
1982 | 0.00 | 0.00 |
1983 | -- | -- |
1984 | 0.00 | 0.00 |
1985 | 0.00 | 0.00 |
1986 | 0.00 | 0.00 |
1987 | 0.00 | 0.01 |
1988 | 0.00 | 0.01 |
1989 | 0.00 | 0.00 |
1990 | 0.00 | 0.00 |
1991 | 0.00 | 0.00 |
1992 | 0.00 | 0.00 |
1993 | 0.00 | 0.00 |
1994 | 0.00 | 0.00 |
1995 | 0.00 | 0.01 |
1996 | 0.00 | 0.01 |
1997 | 0.00 | 0.01 |
1998 | 0.01 | 0.02 |
1999 | 0.00 | 0.01 |
2000 | 0.01 | 0.01 |
2001 | 0.00 | 0.01 |
2002 | 0.00 | 0.00 |
2003 | 0.00 | 0.01 |
2004 | 0.00 | 0.01 |
2005 | 0.00 | 0.01 |
2006 | 0.00 | 0.01 |
2007 | 0.00 | 0.01 |
2008 | 0.00 | 0.01 |
Average | 0.00 | 0.01 |
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