上游充通大兽 SHANGHAI JIAO TONG UNIVERSITY Global trends in the estimated number of drug Global trends in the estimated prevalence of drug users,2006-2013 use,2006-2013 350 8 300 250 240243246 226 208 211203210 200 uopeindod Buowe 49 4.9 48505.2525.2 46 150 100 50 22872771774274 jenuuy 0.61 20062007200820092010201120122013 0.64p.62.6210.60p.60l0590.59 Number of illicit drug users 20062007200820092010201120122013 Number of problem drug users Prevalence of problem drug use (percentage) Prevalence of illicit drug use(percentage)