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Source: Monitoring the Future, Vols I & II (2009)
| Trends in Tranquilizer Use Among Young Adults -- Past Month Use (1986 - 2008) | |||
|---|---|---|---|
| Year | Ages 19 to 28 | College Students | 12th Grade Students |
| 1986 | 1.8 | 1.9 | 2.1 |
| 1987 | 1.6 | 1.0 | 2.0 |
| 1988 | 1.4 | 1.1 | 1.5 |
| 1989 | 1.2 | 0.8 | 1.3 |
| 1990 | 1.1 | 0.5 | 1.2 |
| 1991 | 0.9 | 0.6 | 1.4 |
| 1992 | 1.0 | 0.6 | 1.0 |
| 1993 | 1.0 | 0.4 | 1.2 |
| 1994 | 0.8 | 0.4 | 1.4 |
| 1995 | 1.1 | 0.5 | 1.8 |
| 1996 | 0.7 | 0.7 | 2.0 |
| 1997 | 1.1 | 1.2 | 1.8 |
| 1998 | 1.2 | 1.3 | 2.4 |
| 1999 | 1.3 | 1.1 | 2.5 |
| 2000 | 1.8 | 2.0 | 2.6 |
| 2001 | 2.1 | 1.5 | 2.9 |
| 2002 | 2.8 | 3.0 | 3.3 |
| 2003 | 2.4 | 2.8 | 2.8 |
| 2004 | 2.7 | 2.7 | 3.1 |
| 2005 | 2.1 | 1.5 | 2.9 |
| 2006 | 2.8 | 3.0 | 3.3 |
| 2007 | 2.4 | 2.8 | 2.8 |
| 2008 | 2.7 | 2.7 | 3.1 |
Drug Use Trends for Each Demographic Group
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| 19 to 28 Year Olds | College Students | 12th Grade Students |
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