The GAO reported in 2006 that "From fiscal year 1998 through fiscal year 2006, Congress appropriated over $1.4 billion to support the campaign. For fiscal year 2007, the President’s budget requested $120 million for the campaign, an increase over the fiscal year 2006 appropriation, to purchase additional media time and space to increase the reach and frequency of the campaign’s messages, which would restore appropriations to their fiscal year 2005 level."

Source

General Accountability Office. "ONDCP Media Campaign - National Evaluation Did Not Find That the Youth Anti-Drug Media Campaign Was Effective in Reducing Youth Drug Use," (Washington, DC: report to the Chairman and Ranking Member, Subcommittee on Transportation, Treasury, the Judiciary, Housing and Urban Development, and Related Agencies, Committee on Appropriations, U.S. Senate, August 2006), GAO-06-818, pp. 1-2.
http://www.gao.gov/new.items/…