Average Age of Initiation of Use of Cannabis and of Alcohol for Youth Aged 15-24 in Canada, 2004-2012
CAS CADUMS
Year 2004 2006 2009 2010 2011 2012
Cannabis 15.6 Years 15.5 Years 15.6 Years 15.7 Years 15.6 Years 16.1 Years
Alcohol 15.6 Years 15.6 Years 15.9 Years 15.9 Years 16.0 Years 16.2 Years

CAS: Canadian Addiction Survey
CADUMS: Canadian Alcohol and Drug Use Monitoring Survey