The United Nations reported that there was roughly 160,000 acres of coca crops being grown in Colombia in 2011. In 2010, there was 155,000 acres of coca crops within the country.
The harvest was estimated to have produced up to 345 metric tons of cocaine.
Source: Chris Kraul, “U.N.: Colombian coca and cocaine production shows little change,” Los Angeles Times, World Now Blog, July 25, 2012.