Trends in spending for substance abuse treatment, 1986-2003.

Since 1987, public and private investment in substance abuse (SA) treatment has not kept pace with other health spending. SA treatment spending in the United States grew from $9.3 billion in 1986 to $20.7 billion in 2003. The average annual total growth rate was 4.8 percent. In comparison, total U.S. health care spending grew by 8.0 percent. As a result of the slower growth of SA spending compared to that for all health care, SA spending fell as a share of all health spending from 2.1 percent in 1986 to 1.3 percent in 2003.