|
Source: Monitoring the Future, Vol II (2009), Table 5-3, pp. 153-154
| Ratios of Cocaine Use vs Alcohol and Marijuana Use Among 19 to 28 Year Olds -- Past Month Use | ||
|---|---|---|
| Year | vs Alcohol | vs Marijuana |
| 1986 | 0.11 | 0.37 |
| 1987 | 0.08 | 0.29 |
| 1988 | 0.08 | 0.32 |
| 1989 | 0.05 | 0.25 |
| 1990 | 0.03 | 0.17 |
| 1991 | 0.03 | 0.15 |
| 1992 | 0.03 | 0.14 |
| 1993 | 0.02 | 0.10 |
| 1994 | 0.02 | 0.09 |
| 1995 | 0.02 | 0.11 |
| 1996 | 0.02 | 0.08 |
| 1997 | 0.02 | 0.10 |
| 1998 | 0.03 | 0.11 |
| 1999 | 0.03 | 0.12 |
| 2000 | 0.03 | 0.11 |
| 2001 | 0.03 | 0.13 |
| 2002 | 0.03 | 0.13 |
| 2003 | 0.04 | 0.14 |
| 2004 | 0.03 | 0.13 |
| 2005 | 0.03 | 0.14 |
| 2006 | 0.03 | 0.15 |
| 2007 | 0.03 | 0.13 |
| 2008 | 0.03 | 0.12 |
| Average | 0.04 | 0.16 |
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