Prevalence of Drug Use Worldwide
"It is estimated that in 2016 some 275 million people worldwide had used drugs at least once in the previous year (range: 204 million to 346 million). Corresponding to 5.6 per cent of the global population aged 15–64 years (range: 4.2 to 7.1 per cent), or approximately 1 of every 18 people. The actual number of people who use drugs increased by 20 million people from 2015 to 2016. This change is the consequence of an increase in the global number of cannabis users and, to a lesser extent, changes in the methodology used to produce this estimate.1 However, caution is required in interpreting trends because of the wide uncertainty intervals for the estimates."