Many counties are compensated for the tax-exempt status of federal lands. Counties with national forest lands and with certain Bureau of Land Management (BLM) lands have historically received a percentage of agency revenues, primarily from timber sales. However, timber sales have declined substantially-by more than 90% in some areas. Thus, Congress enacted the Secure Rural Schools and Community Self-Determination Act of 2000 (SRS; P.L. 106-393) as a temporary, optional program of payments based on historic, rather than current, revenues.