"Of the US$ 65 billion turnover of the global market for opiates, only 5-10 per cent (US$ 3-5 billion) are estimated to be laundered by informal banking systems. The rest is laundered through legal trade activities (including smuggling of legal goods into Afghanistan) and the banking system."
Source
United Nations Office on Drugs and Crime, "Addiction, Crime and Insurgency: The transnational threat of Afghan opium" (Vienna, Austria: October 2009), p. 7.
http://www.unodc.org/document…
