http://www.unodc.org/unodc/en/data-and-analysis/WDR-2008.html

The World Drug Report 2008 presents comprehensive information on the illicit drug situation. It provides detailed estimates and trends on production, trafficking and consumption in the opium/heroin, coca/cocaine, cannabis and amphetamine-type stimulants markets. This year, the Report presents an historical review of the development of the international drug control system. Besides the full report in English, an Executive Summary in English, Spanish and French language is available.