Source: National Survey on Drug Use and Health
| Ratios of LSD Use vs Marijuana Use and Alcohol Use Among New Drug Use Initiates -- Total (1965 - 2003) | |||
|---|---|---|---|
| Year | LSD New Users | Ratio vs Marijuana | Ratio vs Alcohol |
| 1965 | 58,000 | 0.07 | 0.02 |
| 1966 | 110,000 | 0.13 | 0.04 |
| 1967 | 142,000 | 0.10 | 0.04 |
| 1968 | 366,000 | 0.18 | 0.10 |
| 1969 | 674,000 | 0.27 | 0.17 |
| 1970 | 764,000 | 0.28 | 0.19 |
| 1971 | 769,000 | 0.26 | 0.20 |
| 1972 | 897,000 | 0.28 | 0.21 |
| 1973 | 816,000 | 0.23 | 0.20 |
| 1974 | 785,000 | 0.24 | 0.19 |
| 1975 | 664,000 | 0.21 | 0.17 |
| 1976 | 643,000 | 0.20 | 0.16 |
| 1977 | 683,000 | 0.20 | 0.17 |
| 1978 | 634,000 | 0.19 | 0.16 |
| 1979 | 787,000 | 0.26 | 0.20 |
| 1980 | 772,000 | 0.30 | 0.21 |
| 1981 | 773,000 | 0.32 | 0.21 |
| 1982 | 681,000 | 0.29 | 0.20 |
| 1983 | 565,000 | 0.24 | 0.17 |
| 1984 | 549,000 | 0.26 | 0.16 |
| 1985 | 570,000 | 0.26 | 0.17 |
| 1986 | 596,000 | 0.29 | 0.18 |
| 1987 | 567,000 | 0.31 | 0.18 |
| 1988 | 597,000 | 0.35 | 0.21 |
| 1989 | 604,000 | 0.37 | 0.19 |
| 1990 | 537,000 | 0.36 | 0.18 |
| 1991 | 597,000 | 0.35 | 0.21 |
| 1992 | 620,000 | 0.32 | 0.20 |
| 1993 | 579,000 | 0.27 | 0.18 |
| 1994 | 714,000 | 0.30 | 0.22 |
| 1995 | 780,000 | 0.30 | 0.24 |
| 1996 | 805,000 | 0.32 | 0.23 |
| 1997 | 777,000 | 0.30 | 0.21 |
| 1998 | 716,000 | 0.29 | 0.18 |
| 1999 | 762,000 | 0.29 | 0.19 |
| 2000 | 788,000 | 0.29 | 0.17 |
| 2001 | 614,000 | 0.22 | 0.13 |
| 2002 | 303,000 | 0.11 | 0.06 |
| 2003 | 320,000 | 0.13 | -- |
| Averages: | 626,444 | 0.29 | 0.19 |
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