|
Source: Monitoring the Future, Vols I & II (2009)
| Ratios of Amphetamine Use to Marijuana Use Among Young Adults -- Past Year Use (1986 - 2008) | |||
|---|---|---|---|
| Year | Ages 19 Use to 28 | College Students | 12th Grade Students |
| 1986 | 0.29 | 0.25 | 0.35 |
| 1987 | 0.25 | 0.19 | 0.34 |
| 1988 | 0.23 | 0.18 | 0.33 |
| 1989 | 0.20 | 0.14 | 0.36 |
| 1990 | 0.20 | 0.15 | 0.34 |
| 1991 | 0.18 | 0.15 | 0.34 |
| 1992 | 0.16 | 0.13 | 0.32 |
| 1993 | 0.16 | 0.15 | 0.32 |
| 1994 | 0.18 | 0.14 | 0.31 |
| 1995 | 0.17 | 0.17 | 0.27 |
| 1996 | 0.16 | 0.13 | 0.27 |
| 1997 | 0.17 | 0.18 | 0.26 |
| 1998 | 0.16 | 0.14 | 0.27 |
| 1999 | 0.17 | 0.16 | 0.27 |
| 2000 | 0.19 | 0.19 | 0.29 |
| 2001 | 0.20 | 0.20 | 0.29 |
| 2002 | 0.20 | 0.20 | 0.31 |
| 2003 | 0.20 | 0.21 | 0.28 |
| 2004 | 0.21 | 0.21 | 0.29 |
| 2005 | 0.20 | 0.20 | 0.29 |
| 2006 | 0.20 | 0.20 | 0.31 |
| 2007 | 0.20 | 0.21 | 0.28 |
| 2008 | 0.21 | 0.21 | 0.29 |
Other Available Trend and Comparison Data
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