"The large amount of OxyContin available in the marketplace may have increased opportunities for abuse and diversion. Both DEA and Purdue have stated that an increase in a drug's availability in the marketplace may be a factor that attracts interest by those who abuse and divert drugs."

Source

General Accounting Office, "Prescription Drugs: Oxycontin Abuse and Diversion and Efforts to Address the Problem," GAO-04-110 (Washington, DC: Government Printing Office, December 2003), p. 30.
http://www.gao.gov/new.items/…