Law enforcement agencies in Sri Lanka arrested 22,691 people for marijuana-related crimes between January and October 2011.
An addition 11,787 arrests were made for either using, dealing or trafficking heroin in the country, according to a report by the US State Department.
(See the cost of marijuana here.)
Source: “2012 International Narcotics Control Strategy Report,” United States Department of State, March 7, 2012.