上游充通大学 SHANGHAI JIAO TONG UNIVERSITY Lifetime,annual and past-month prevalence of drug use in prisons(based on 62 studies from 43 countries over the period 2000-2013) 45.0 40.0 35.0 30.0 25.0 20.0 15.0 10.0 5.0 0.0 lenuuv swnaji enuuv yauow ised Any illicit drug use Cannabis Heroin Cocaine Amphetamines Ecstasy