Magnified View of Graphic
Source: Monitoring the Future
| Comparison Trends in Crack Use -- Lifetime Use (1991 - 2005) | |||
|---|---|---|---|
| Year | 12th Grade | 10th Grade | 8th Grade |
| 1991 | 3.1 | 1.7 | 1.3 |
| 1992 | 2.6 | 1.5 | 1.6 |
| 1993 | 2.6 | 1.8 | 1.7 |
| 1994 | 3.0 | 2.1 | 2.4 |
| 1995 | 3.0 | 2.8 | 2.7 |
| 1996 | 3.3 | 3.3 | 2.9 |
| 1997 | 3.9 | 3.6 | 2.7 |
| 1998 | 4.4 | 3.9 | 3.2 |
| 1999 | 4.6 | 4.0 | 3.1 |
| 2000 | 3.9 | 3.7 | 3.1 |
| 2001 | 3.7 | 3.1 | 3.0 |
| 2002 | 3.8 | 3.6 | 2.5 |
| 2003 | 3.6 | 2.7 | 2.5 |
| 2004 | 3.9 | 2.6 | 2.4 |
| 2005 | 3.5 | 2.5 | 2.4 |
| Averages: | 3.5 | 2.9 | 2.5 |
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