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| Ratios of Amphetamine Use to Marijuana Use Among Young Adults -- Past Month Use (1986 - 2008) | |||
|---|---|---|---|
| Year | Ages 19 Use to 28 | College Students | 12th Grade Students |
| 1986 | 0.18 | 0.17 | 0.24 |
| 1987 | 0.15 | 0.11 | 0.25 |
| 1988 | 0.15 | 0.11 | 0.26 |
| 1989 | 0.14 | 0.08 | 0.25 |
| 1990 | 0.14 | 0.10 | 0.26 |
| 1991 | 0.11 | 0.07 | 0.23 |
| 1992 | 0.11 | 0.08 | 0.24 |
| 1993 | 0.11 | 0.11 | 0.24 |
| 1994 | 0.12 | 0.10 | 0.21 |
| 1995 | 0.12 | 0.12 | 0.19 |
| 1996 | 0.10 | 0.05 | 0.19 |
| 1997 | 0.11 | 0.12 | 0.20 |
| 1998 | 0.11 | 0.09 | 0.20 |
| 1999 | 0.12 | 0.11 | 0.19 |
| 2000 | 0.14 | 0.15 | 0.23 |
| 2001 | 0.14 | 0.16 | 0.25 |
| 2002 | 0.15 | 0.15 | 0.26 |
| 2003 | 0.14 | 0.16 | 0.24 |
| 2004 | 0.15 | 0.17 | 0.23 |
| 2005 | 0.14 | 0.16 | 0.25 |
| 2006 | 0.15 | 0.15 | 0.26 |
| 2007 | 0.14 | 0.16 | 0.24 |
| 2008 | 0.15 | 0.17 | 0.23 |
Other Available Trend and Comparison Data
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| Ratios of Amphetamine Use vs Marijuana Use Across Young Adult Demographics | ||
| Lifetime Ratios of Amphetamine Use vs Marijuana | Past Year Ratios of Amphetamine Use vs Marijuana | Comparisons Across High School Demographics |
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| Ratios of Amphetamine Use vs Alcohol Use by Young Adults | ||
| Lifetime Amphetamine Use vs Alcohol | Past Year Amphetamine Use vs Alcohol | Past Month Amphetamine Use vs Alcohol |
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| Comparison Trends by Specific Young Adult Demographics | ||
| 19 to 28 Year Olds | College Students | 12th Grade Students |
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