"On average, 7% of the ESPAD students stated that they had used marijuana or hashish during the past 30 days. As a proportion of the group reporting lifetime use, this corresponds to roughly four in ten. The highest rates of past-30-days cannabis use are found in the two neighbouring countries of France and Monaco (24% and 21%, respectively), followed by the United States (not an ESPAD country) (18 %) and the Czech Republic and Spain (not an ESPAD country) (15% each).
Estimated Past Year Prevalence of Cocaine and Crack Use Among Young People in the US: "Past-year cocaine use in 2015 among 12th graders has been essentially the same across regions and varied between 1.8% and 2.3%, with the exception that the West stood out and climbed to 4.4% in 2015 (Figure 5-10b; also Tables 36-38 and Figure 81 in Occasional Paper 86). In past years regional variation in cocaine use was the largest observed for any of the drugs.