Source: Monitoring the Future
| Comparison Trends in Other Narcotic Use -- Lifetime Use (1986 - 2004) | |||
|---|---|---|---|
| Year | Ages 19 to 28 | College Students | 12th Grade Students |
| 1986 | 10.7 | 8.8 | 9.0 |
| 1987 | 10.6 | 7.6 | 9.2 |
| 1988 | 9.8 | 6.3 | 8.6 |
| 1989 | 9.6 | 7.6 | 8.3 |
| 1990 | 9.4 | 6.8 | 8.3 |
| 1991 | 9.3 | 7.3 | 6.6 |
| 1992 | 8.9 | 7.3 | 6.1 |
| 1993 | 8.1 | 6.2 | 6.4 |
| 1994 | 8.2 | 5.1 | 6.6 |
| 1995 | 9.0 | 7.2 | 7.2 |
| 1996 | 8.3 | 5.7 | 8.2 |
| 1997 | 9.2 | 8.2 | 9.7 |
| 1998 | 9.1 | 8.7 | 9.8 |
| 1999 | 9.5 | 8.7 | 10.2 |
| 2000 | 10.0 | 8.9 | 10.6 |
| 2001 | 11.5 | 11.0 | 9.9 |
| 2002 | 13.9 | 12.2 | 13.5 |
| 2003 | 16.8 | 14.2 | 13.2 |
| 2004 | 17.6 | 13.8 | 13.5 |
| Averages: | 10.5 | 8.5 | 9.2 |
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