|
Source: Monitoring the Future, Vol I (2009), Tables 5-5a, 5-5b and 5-5c, pp. 202-13
| Ratios of Amphetamine Use vs Marijuana Use Among 10th Grade Students (1991 - 2008) | |||
|---|---|---|---|
| Year | Lifetime | Past Year | Past Month |
| 1991 | 0.56 | 0.50 | 0.38 |
| 1992 | 0.61 | 0.54 | 0.44 |
| 1993 | 0.61 | 0.50 | 0.39 |
| 1994 | 0.50 | 0.40 | 0.28 |
| 1995 | 0.51 | 0.41 | 0.31 |
| 1996 | 0.44 | 0.37 | 0.27 |
| 1997 | 0.40 | 0.35 | 0.25 |
| 1998 | 0.40 | 0.34 | 0.27 |
| 1999 | 0.38 | 0.32 | 0.26 |
| 2000 | 0.39 | 0.34 | 0.27 |
| 2001 | 0.40 | 0.36 | 0.28 |
| 2002 | 0.39 | 0.35 | 0.29 |
| 2003 | 0.36 | 0.32 | 0.25 |
| 2004 | 0.34 | 0.31 | 0.25 |
| 2005 | 0.33 | 0.29 | 0.24 |
| 2006 | 0.35 | 0.31 | 0.25 |
| 2007 | 0.36 | 0.33 | 0.28 |
| 2008 | 0.30 | 0.27 | 0.20 |
Other Available Trend and Comparison Data
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