Source: Monitoring the Future
| Ratios of LSD Use vs Marijuana Use and Alcohol Use Among College Students -- Past Year (1980 - 2004) | |||
|---|---|---|---|
| Year | LSD Use Rate (%) | Ratio vs Marijuana | Ratio vs Alcohol |
| 1980 | 6.0 | 0.12 | 0.07 |
| 1981 | 4.6 | 0.09 | 0.05 |
| 1982 | 6.3 | 0.14 | 0.07 |
| 1983 | 4.3 | 0.10 | 0.05 |
| 1984 | 3.7 | 0.09 | 0.04 |
| 1985 | 2.2 | 0.05 | 0.02 |
| 1986 | 3.9 | 0.10 | 0.04 |
| 1987 | 4.0 | 0.11 | 0.04 |
| 1988 | 3.6 | 0.10 | 0.04 |
| 1989 | 3.4 | 0.10 | 0.04 |
| 1990 | 4.3 | 0.15 | 0.05 |
| 1991 | 5.1 | 0.19 | 0.06 |
| 1992 | 5.7 | 0.21 | 0.07 |
| 1993 | 5.1 | 0.18 | 0.06 |
| 1994 | 5.2 | 0.18 | 0.06 |
| 1995 | 6.9 | 0.22 | 0.08 |
| 1996 | 5.2 | 0.16 | 0.06 |
| 1997 | 5.0 | 0.16 | 0.06 |
| 1998 | 4.4 | 0.12 | 0.05 |
| 1999 | 5.4 | 0.15 | 0.06 |
| 2000 | 4.3 | 0.13 | 0.05 |
| 2001 | 4.0 | 0.11 | 0.05 |
| 2002 | 2.1 | 0.06 | 0.03 |
| 2003 | 1.4 | 0.04 | 0.02 |
| 2004 | 1.2 | 0.04 | 0.01 |
| Averages: | 4.2 | 0.13 | 0.05 |
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