This document provides data on the amount of cocaine smuggled into the United States in 2010. According to this report, "[t]he amount of cocaine departing South America decreased in 2010 for a third straight year. Cocaine flow toward the United States declined roughly 20 percent in 2010. This assessment is based on decreases in the amount of Colombian cocaine available to depart South America,1 the level of documented cocaine movement toward the United States, and estimated U.S. cocaine demand."
Office of National Drug Control Policy, ONDCP-01-11
White House Office: http://www.whitehouse.gov/