The data displays the annual prevalence of use of marijuana/hashish for grades 8, 10 and 12 combined, from 1991 to 2017. Around 27.5% of all respondents in grades 8,10 and 12 in 2001 stated that they used marijuana/hashish within that year.
2017 | 23.9 |
2016 | 22.6 |
2015 | 23.7 |
2014 | 24.2 |
2013 | 25.8 |
2012 | 24.7 |
2011 | 25 |
2010 | 24.5 |
2009 | 22.9 |
2008 | 21.5 |
2007 | 21.4 |
2006 | 22 |
2005 | 23.4 |
2004 | 23.8 |
2003 | 24.6 |
2002 | 26.1 |
2001 | 27.5 |
2000 | 27.2 |
1999 | 27.9 |
1998 | 28.2 |
1997 | 30.1 |
1996 | 29 |
1995 | 26.1 |
1994 | 22.5 |
1993 | 17.7 |
1992 | 14.3 |
1991 | 15 |