The data displays the annual prevalence of use of any illicit drug for grades 8, 10 and 12 combined from 1991 to 2017. Around 31.8% of all respondents in grades 8,10 and 12 in 2001 stated that they used any illicit drug within that year.
2017 | 26.5 |
2016 | 25.3 |
2015 | 26.8 |
2014 | 27.2 |
2013 | 28.6 |
2012 | 27.1 |
2011 | 27.6 |
2010 | 27.3 |
2009 | 25.9 |
2008 | 24.9 |
2007 | 24.8 |
2006 | 25.8 |
2005 | 27.1 |
2004 | 27.6 |
2003 | 28.4 |
2002 | 30.2 |
2001 | 31.8 |
2000 | 31.4 |
1999 | 31.9 |
1998 | 32.2 |
1997 | 34.1 |
1996 | 33.6 |
1995 | 31 |
1994 | 27.6 |
1993 | 23.2 |
1992 | 19.7 |
1991 | 20.2 |