Source: National Survey on Drug Use and Health
| Ratios of Tranquilizer Use vs Marijuana Use and Alcohol Use Among New Drug Use Initiates -- Total (1965 - 2003) | |||
|---|---|---|---|
| Year | Tranquilizer New Users | Ratio vs Marijuana | Ratio vs Alcohol |
| 1965 | 59,000 | 0.08 | 0.02 |
| 1966 | 62,000 | 0.07 | 0.02 |
| 1967 | 110,000 | 0.08 | 0.03 |
| 1968 | 155,000 | 0.08 | 0.04 |
| 1969 | 235,000 | 0.10 | 0.06 |
| 1970 | 218,000 | 0.08 | 0.05 |
| 1971 | 255,000 | 0.09 | 0.07 |
| 1972 | 374,000 | 0.12 | 0.09 |
| 1973 | 460,000 | 0.13 | 0.11 |
| 1974 | 462,000 | 0.14 | 0.11 |
| 1975 | 471,000 | 0.15 | 0.12 |
| 1976 | 492,000 | 0.15 | 0.13 |
| 1977 | 423,000 | 0.13 | 0.10 |
| 1978 | 394,000 | 0.12 | 0.10 |
| 1979 | 481,000 | 0.16 | 0.12 |
| 1980 | 385,000 | 0.15 | 0.11 |
| 1981 | 447,000 | 0.18 | 0.12 |
| 1982 | 416,000 | 0.18 | 0.12 |
| 1983 | 403,000 | 0.17 | 0.12 |
| 1984 | 468,000 | 0.22 | 0.14 |
| 1985 | 424,000 | 0.20 | 0.13 |
| 1986 | 391,000 | 0.19 | 0.12 |
| 1987 | 354,000 | 0.19 | 0.11 |
| 1988 | 415,000 | 0.24 | 0.14 |
| 1989 | 412,000 | 0.25 | 0.13 |
| 1990 | 377,000 | 0.25 | 0.13 |
| 1991 | 380,000 | 0.22 | 0.13 |
| 1992 | 441,000 | 0.23 | 0.14 |
| 1993 | 519,000 | 0.24 | 0.16 |
| 1994 | 467,000 | 0.19 | 0.14 |
| 1995 | 580,000 | 0.22 | 0.18 |
| 1996 | 659,000 | 0.27 | 0.19 |
| 1997 | 668,000 | 0.26 | 0.18 |
| 1998 | 860,000 | 0.34 | 0.22 |
| 1999 | 916,000 | 0.35 | 0.22 |
| 2000 | 1,298,000 | 0.47 | 0.27 |
| 2001 | 1,212,000 | 0.43 | 0.25 |
| 2002 | 1,253,000 | 0.47 | 0.24 |
| 2003 | 1,322,000 | 0.54 | -- |
| Averages: | 695,778 | 0.30 | 0.17 |
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