According to estimates by security and intelligence agencies, an estimated 345 tons of cocaine is produced in Colombia each year. Out of this total, around 20 percent, or 70 tons, is consumed domestically in the country. The cocaine used in Colombia is generally used in a powder form or in the cheaper form of cocaine base.
640 tons of marijuana is consumed in Colombia each year, with only 30 percent of the marijuana produced in Colombia being exported to other countries.
Source: James Bargent, “Growing Local Drug Market Fuels Colombia’s Underworld,” Insight Crime, May 29, 2013.