During a 5-year period–fiscal years 2008 through 2012–costs for inmate mental health services in institutions run by the Bureau of Prisons (BOP) rose in absolute dollar amount, as well as on an annual per capita basis. Specifically, mental health services costs rose from $123 million in fiscal year 2008 to $146 million in fiscal year 2012, with increases generally due to three factors–inmate population increases, general inflationary increases, and increased participation rates in psychology treatment programs such as drug abuse treatment programs. Additionally, the per capita cost rose from $741 in fiscal year 2008 to $821 in fiscal year 2012. It is projected that these costs will continue to increase with an estimated per capita cost of $876 in fiscal year 2015, due, in part, to increased program funding and inflation.