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Source: Monitoring the Future, Vol I (2009), Table 5-5b, pp. 206-209
| Trends in Tranquilizer Use Among High School Students -- Past Year Use (1991 - 2008) | |||
|---|---|---|---|
| Year | 12th Grade | 10th Grade | 8th Grade |
| 1991 | 3.6 | 3.2 | 1.8 |
| 1992 | 2.8 | 3.5 | 2.0 |
| 1993 | 3.5 | 3.3 | 2.1 |
| 1994 | 3.7 | 3.3 | 2.4 |
| 1995 | 4.4 | 4.0 | 2.7 |
| 1996 | 4.6 | 4.6 | 3.3 |
| 1997 | 4.7 | 4.9 | 2.9 |
| 1998 | 5.5 | 5.1 | 2.6 |
| 1999 | 5.8 | 5.4 | 2.5 |
| 2000 | 5.7 | 5.6 | 2.6 |
| 2001 | 6.9 | 7.3 | 2.8 |
| 2002 | 7.7 | 6.3 | 2.6 |
| 2003 | 6.7 | 5.3 | 2.7 |
| 2004 | 7.3 | 5.1 | 2.5 |
| 2005 | 6.8 | 4.8 | 2.8 |
| 2006 | 6.6 | 5.2 | 2.6 |
| 2007 | 6.2 | 5.3 | 2.4 |
| 2008 | 6.2 | 4.6 | 2.4 |
Drug Use Trends for Each Demographic Group
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| 8th Grade Students | 10th Grade Students | 12th Grade Students |
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