Table: Estimated Federal Drug Control Spending By Function for Fiscal Years 2003-2017 including revisions by ONDCP for FY2009-FY2016.

ONDCP changed its method of accounting for treatment spending in its FY2018 report. According to footnote two for table two, p. 18, in the FY2018 budget report: "The estimates for the CMS [Centers or Medicare and Medicaid Services] reflect Medicaid and Medicare benefit outlays (excluding spending under Medicare Part D) for substance use disorder treatment; they do not reflect budget authority. The methodology for Medicaid estimates has been refined from prior years to more accurately reflect spending. The estimates were developed by the CMS Office of the Actuary." Questions have arisen regarding this decision, so in order to provide a better understanding of these figures, here's a table showing Federal Drug Control Spending by Function FY2008 through FY2016 and the request for FY2017 as estimated by ONDCP in December 2016.

Source

"National Drug Control Budget: FY 2018 Funding Highlights" (Washington, DC: Executive Office of the President, Office of National Drug Control Policy), May 2017, Table 1, p. 16; Table 2, p. 18; and Table 3, p. 19.
https://www.whitehouse.gov/si…
"FY 2017 Budget and Performance Summary" (Washington, DC: Executive Office of the President, Office of National Drug Control Policy), December 2016, Table 1, p. 21, and Table 3, p. 24.
https://obamawhitehouse.archi…
"National Drug Control Budget: FY 2016 Funding Highlights" (Washington, DC: Executive Office of the President, Office of National Drug Control Policy), February 2015, Table 3, p. 18.
http://obamawhitehouse.archiv…
"FY2012 Budget and Performance Summary: Companion to the National Drug Control Strategy" (Washington, DC: Executive Office of the President, Office of National Drug Control Policy), April 2011, Table 3, p. 22.
https://obamawhitehouse.archi…