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BEH3.B Illicit drug use: Percentage of 8th-, 10th-, and 12th-grade students who reported smoking marijuana in the past 30 days by grade, 1980–2019

excel icon BEH3.B Excel Table

Characteristic 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
8th grade
Total 3.2 3.7 5.1 7.8 9.1 11.3 10.2 9.7 9.7 9.1 9.2 8.3 7.5 6.4 6.6 6.5 5.7 5.8 6.5 8.0 7.2 6.5 7.0 6.5 6.5 5.4 5.5 5.6 6.6
10th grade
Total 8.7 8.1 10.9 15.8 17.2 20.4 20.5 18.7 19.4 19.7 19.8 17.8 17.0 15.9 15.2 14.2 14.2 * 15.9 16.7 17.6 17.0 18.0 16.6 14.8 14.0 15.7 16.7 18.4
12th grade
Total 33.7 31.6 28.5 27.0 25.2 25.7 23.4 21.0 18.0 16.7 14.0 13.8 11.9 15.5 19.0 21.2 21.9 23.7 22.8 23.1 21.6 22.4 21.5 21.2 19.9 19.8 18.3 18.8 19.4 20.6 21.4 22.6 22.9 22.7 21.2 21.3 22.5 22.9 22.2 22.3
— Not available.
* Data for 10th-graders for 2008 are not included because estimates are considered to be unreliable due to sampling errors. See http://www.monitoringthefuture.org/data/09data.html#2009data-drugs.
SOURCE: Miech, R. A., Johnston, L. D., O'Malley, P. M., Bachman, J. G., Schulenberg, J. E., & Patrick, M. E. (2020). Monitoring the future national survey results on drug use, 1975–2018: 2018 Overview: Key findings on adolescent drug use. The University of Michigan, Institute for Social Research.