"Compared with some other parts of the world for which reliable data exist, the estimated last year prevalence of cocaine use among young adults in Europe (2.1%) is below the levels reported for young adults in Australia (4.8 %) and the United States (4.0% among 16- to 34-year-olds), but close to that reported for Canada (1.8%). Two European countries, Spain (4.4%) and the United Kingdom (4.2%), report figures similar to those of Australia and the United States (Figure 9)."

Source

European Monitoring Centre for Drugs and Drug Addiction, "Annual report 2012: the state of the drugs problem in Europe" (Luxembourg: Publications Office of the European Union, November 2012), Catalog No. TDAC12001ENC, doi:10.2810/64775, p. 63.
http://www.emcdda.europa.eu/p…
http://www.emcdda.europa.eu/a…