Source: Monitoring the Future
| Ratios of Tranquilizer Use vs Marijuana Use and Alcohol Use Among Those Ages 19 to 28 -- Past Month (1986 - 2004) | |||
|---|---|---|---|
| Year | Tranquilizer Use Rate (%) | Ratio vs Marijuana | Ratio vs Alcohol |
| 1986 | 1.8 | 0.08 | 0.024 |
| 1987 | 1.6 | 0.08 | 0.021 |
| 1988 | 1.4 | 0.08 | 0.019 |
| 1989 | 1.2 | 0.08 | 0.017 |
| 1990 | 1.1 | 0.08 | 0.015 |
| 1991 | 0.9 | 0.07 | 0.013 |
| 1992 | 1.0 | 0.08 | 0.014 |
| 1993 | 1.0 | 0.07 | 0.015 |
| 1994 | 0.8 | 0.06 | 0.012 |
| 1995 | 1.1 | 0.08 | 0.016 |
| 1996 | 0.7 | 0.05 | 0.010 |
| 1997 | 1.1 | 0.07 | 0.016 |
| 1998 | 1.2 | 0.08 | 0.018 |
| 1999 | 1.3 | 0.08 | 0.019 |
| 2000 | 1.8 | 0.11 | 0.027 |
| 2001 | 2.1 | 0.13 | 0.031 |
| 2002 | 2.8 | 0.17 | 0.041 |
| 2003 | 2.4 | 0.14 | 0.036 |
| 2004 | 2.7 | 0.16 | 0.039 |
| Averages: | 1.5 | 0.09 | 0.021 |
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