"As far as trafficking is concerned, a comparison with the interception rate of opiates in 1998 (17%), makes the interception rate of 46% reported for cocaine for the same year appear extremely high. Assuming a similar volume of seizures in 1999, the rate would be even higher (50%). For the reasons mentioned above, there are thus some doubts about the accuracy of the total potential cocaine production reported during the past few years (765 mt in 1999)."

Source

United Nations Office for Drug Control and Crime Prevention, Global Illicit Drug Trends 2000 (New York, NY: UNDCP, 2000), p. 32.
http://www.unodc.org/pdf/repo…