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| Marijuana Use Within Cohort -- High School Senior Classes of 1995 through 2008 | ||
|---|---|---|
| Lifetime | Past Year | Past Month |
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Source: Monitoring the Future, 2009, Tables 5-5a, 5-5b and 5-5c, pp.202-13
| Trends in Marijuana Use Within HS Senior Cohorts -- Classes of 1995 through 2008 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lifetime | Past Year | Past Month | |||||||
| Class of: | 8th Grade | 10th Grade | 12th Grade | 8th Grade | 10th Grade | 12th Grade | 8th Grade | 10th Grade | 12th Grade |
| 1995 | 10.2 | 24.4 | 41.7 | 6.2 | 19.2 | 34.7 | 3.2 | 10.9 | 21.2 |
| 1996 | 11.2 | 30.4 | 44.9 | 7.2 | 25.2 | 35.8 | 3.7 | 15.8 | 21.9 |
| 1997 | 12.6 | 34.1 | 49.6 | 9.2 | 28.7 | 38.5 | 5.1 | 17.2 | 23.7 |
| 1998 | 16.7 | 39.8 | 49.1 | 13.0 | 33.6 | 37.5 | 7.8 | 20.4 | 22.8 |
| 1999 | 19.9 | 42.3 | 49.7 | 15.8 | 34.8 | 37.8 | 9.1 | 20.5 | 23.1 |
| 2000 | 23.1 | 39.6 | 48.8 | 18.3 | 31.1 | 36.5 | 11.3 | 18.7 | 21.6 |
| 2001 | 22.6 | 40.9 | 49.0 | 17.7 | 32.1 | 37.0 | 10.2 | 19.4 | 22.4 |
| 2002 | 22.2 | 40.3 | 47.8 | 16.9 | 32.2 | 36.2 | 9.7 | 19.7 | 21.5 |
| 2003 | 22.0 | 40.1 | 46.1 | 16.5 | 32.7 | 34.9 | 9.7 | 19.8 | 21.2 |
| 2004 | 20.3 | 38.7 | 45.7 | 15.6 | 30.3 | 34.3 | 9.1 | 17.8 | 19.9 |
| 2005 | 20.4 | 36.4 | 44.8 | 15.4 | 28.2 | 33.6 | 9.2 | 17.0 | 19.8 |
| 2006 | 19.2 | 35.1 | 42.3 | 14.6 | 27.5 | 31.5 | 8.3 | 15.9 | 18.3 |
| 2007 | 17.5 | 34.1 | 41.8 | 12.8 | 26.6 | 31.7 | 7.5 | 15.2 | 18.8 |
| 2008 | 16.3 | 31.8 | 42.6 | 11.8 | 25.2 | 32.4 | 6.4 | 14.2 | 19.4 |