The Government Accountability Office (GAO) produced this report on the Plan Colombia that states, "Plan Colombia’s goal of reducing the cultivation, processing, and distribution of illegal narcotics by 50 percent in 6 years was not fully achieved. From 2000 to 2006, opium poppy cultivation and heroin production declined about 50 percent, while coca cultivation and cocaine production levels increased by about 15 and 4 percent, respectively. These increases, in part, can be explained by measures taken by coca farmers to counter U.S. and Colombian eradication efforts. Colombia has improved its security climate through systematic military and police engagements with illegal armed groups and by degrading these groups’ finances. U.S. Embassy Bogotá officials cautioned that these security gains will not be irreversible until illegal armed groups can no longer threaten the stability of the government of Colombia, but become a law enforcement problem requiring only police attention."