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- Past-year prevalence of marijuana use among young people in the tolerant Netherlands about half as in nearby France: The State of the Drugs Problem in Europe, 2007 report EMCDDA (page 41)
- States with marijuana decriminalization have not seen resulting rises in use: various studies including Institute of Medicine, Monitoring the Future, Connecticut Law Review Commission, others
- Teen marijuana use declines in states with medical marijuana laws: Marijuana Use by Young People: The Impact of State Medical Marijuana Laws
- Substitution effect between marijuana use and alcohol use: Substitution of Marijuana for Alcohol: The Role of Perceived Access and Harm, Journal of Drug Education, 2006
- Average Age of Netherlands heroin addicts has been increasing (e.g. few young heroin addicts): Netherlands Institute of Mental Health and Addiction
- Opiates and cocaine were banned almost a century ago (1914) by the Harrison Narcotics Act: Consumers Union Report on Licit and Illicit Drugs
- Taliban earns $100 million in opium profits in 2007: Drug War Chronicle citing UN Office on Drugs and Crime Chief Antonio Costa on BBC
- Drug prohibition sends hundreds of billions of dollars per year in illicit revenues to the global underground: UN World Drug Report, via Drug War Chronicle
- The US homicide rate increased under alcohol prohibition and decreased following it's repeal: Schaffer Library alcohol prohibition section
- Street price of cocaine (adjusted for purity and inflation) drops by 80% since 1980: Rand Corporation, via Joint Economic Committee, US Senate