Source: Monitoring the Future
| Ratios of Hallucinogen Use vs Marijuana Use and Alcohol Use Among College Students -- Lifetime (1980 - 2004) | |||
|---|---|---|---|
| Year | Hallucinogen Use Rate (%) | Ratio vs Marijuana | Ratio vs Alcohol |
| 1980 | 15.0 | 0.23 | 0.16 |
| 1981 | 12.0 | 0.19 | 0.13 |
| 1982 | 15.0 | 0.25 | 0.16 |
| 1983 | 12.2 | 0.19 | 0.13 |
| 1984 | 12.9 | 0.22 | 0.14 |
| 1985 | 11.4 | 0.19 | 0.12 |
| 1986 | 11.2 | 0.19 | 0.12 |
| 1987 | 10.9 | 0.20 | 0.12 |
| 1988 | 10.2 | 0.19 | 0.11 |
| 1989 | 10.7 | 0.21 | 0.11 |
| 1990 | 11.2 | 0.23 | 0.12 |
| 1991 | 11.3 | 0.24 | 0.12 |
| 1992 | 12.0 | 0.27 | 0.13 |
| 1993 | 11.8 | 0.28 | 0.13 |
| 1994 | 10.0 | 0.24 | 0.11 |
| 1995 | 13.0 | 0.31 | 0.15 |
| 1996 | 12.6 | 0.28 | 0.14 |
| 1997 | 13.8 | 0.30 | 0.16 |
| 1998 | 15.2 | 0.30 | 0.17 |
| 1999 | 14.8 | 0.29 | 0.17 |
| 2000 | 14.4 | 0.28 | 0.17 |
| 2001 | 14.8 | 0.29 | 0.17 |
| 2002 | 13.6 | 0.27 | 0.16 |
| 2003 | 14.5 | 0.29 | 0.17 |
| 2004 | 12.0 | 0.24 | 0.14 |
| Averages: | 12.5 | 0.26 | 0.14 |
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