Demand for cannabis Global prevalence of cannabis use has remained stable in recent years, despite an increase in the number of cannabis users Cannabis continues to be the most widely used drug worldwide.
UNODC estimates that roughly 3.8 per cent (range: 3.3–4.4 per cent) of the global population aged 15–64 years used cannabis at least once in 2017, the equivalent of some 188 million people (range: 164–219 million). The average global prevalence of cannabis use increased over the period
1998–2007, from 3.4 to 3.9 per cent, before remaining basically stable during the subsequent decade. The overall number of annual cannabis users is estimated to have increased by roughly 30 per cent during the period 1998–2017. Since 2009, the pastyear prevalence of cannabis use has increased by some 4 per cent, while the number of cannabis users has increased by around 19 per cent, reflecting in part an increase in the global population, which had increased by 10 per cent over the same period. This increase should be interpreted with caution, however, because of the wide margins of error around the estimation of prevalence and of the number of cannabis users. Nevertheless, qualitative information on changes in cannabis use, as reported by an average of 74 Member States per year, confirms the increase in cannabis use over the period 2007–2017.
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