2003 Monitoring the Future (MTF) Survey Data
Percentage of 8th-Graders Who Have Used Marijuana:
Monitoring the Future Study, 2003
Ever Used / 16.7% / 19.9% / 23.1% / 22.6% / 22.2%
Used in Past Year / 13.0 / 15.8 / 18.3 / 17.7 / 16.9
Used in Past Month / 7.8 / 9.1 / 11.3 / 10.2 / 9.7
Daily Use in Past Month / 0.7 / 0.8 / 1.5 / 1.1 / 1.1
1999 / 2000 / 2001 / 2002 / 2003
Ever Used / 22.0% / 20.3% / 20.4% / 19.2% / 17.5%
Used in Past Year / 16.5 / 15.6 / 15.4 / 14.6 / 12.8
Used in Past Month / 9.7 / 9.1 / 9.2 / 8.3 / 7.5
Daily Use in Past Month / 1.4 / 1.3 / 1.3 / 1.2 / 1.0
Percentage of 10th-Graders Who Have Used Marijuana:
Monitoring the Future Study, 2003
Ever Used / 30.4% / 34.1% / 39.8% / 42.3% / 39.6%
Used in Past Year / 25.2 / 28.7 / 33.6 / 34.8 / 31.1
Used in Past Month / 15.8 / 17.2 / 20.4 / 20.5 / 18.7
Daily Use in Past Month / 2.2 / 2.8 / 3.5 / 3.7 / 3.6
1999 / 2000 / 2001 / 2002 / 2003
Ever Used / 40.9% / 40.3% / 40.1% / 38.7% / 36.4%
Used in Past Year / 32.1 / 32.2 / 32.7 / 30.3 / 28.2
Used in Past Month / 19.4 / 19.7 / 19.8 / 17.8 / 17.0
Daily Use in Past Month / 3.8 / 3.8 / 4.5 / 3.9 / 3.6
Percentage of 12th-Graders Who Have Used Marijuana
Monitoring the Future Study, 2003
Ever Used / 60.4% / 36.7% / 32.6% / 35.3% / 38.2% / 41.7% / 44.9%
Used in Past Year / 50.8 / 23.9 / 21.9 / 26.0 / 30.7 / 34.7 / 35.8
Used in Past Month / 36.5 / 13.8 / 11.9 / 15.5 / 19.0 / 21.2 / 21.9
Daily Use in Past Month / 10.3 / 2.0 / 1.9 / 2.4 / 3.6 / 4.6 / 4.9
1997 / 1998 / 1999 / 2000 / 2001 / 2002 / 2003
Ever Used / 49.6% / 49.1% / 49.7% / 48.8% / 49.0% / 47.8% / 46.1%
Used in Past Year / 38.5 / 37.5 / 37.8 / 36.5 / 37.0 / 36.2 / 34.9
Used in Past Month / 23.7 / 22.8 / 23.1 / 21.6 / 22.4 / 21.5 / 21.2
Daily Use in Past Month / 5.8 / 5.6 / 6.0 / 6.0 / 5.8 / 6.0 / 6.0
These data are from the 2003 Monitoring the Future (MTF) Survey, funded by National Institute on Drug Abuse, National Institutes of Health, DHHS, and conducted by the University of Michigan’s Institute for Social Research. The survey has tracked 12th-graders’ illicit drug use and related attitudes since 1975; in 1991, 8th- and 10th-graders were added to the study. The latest data are online at www.drugabuse.gov.
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