Current dollars and Constant dollars represent average total costs of research project grants. Constant dollars were computed using 1998 as the base.
FY 2009 and 2010 exclude awards made under the American Recovery and Reinvestment Act of 2009 (ARRA).
Research Center Grants are defined as G12, M01, P20, P30, P40, P41, P50, P51, P60, PL1, U30, U40, U41, U42, U50, U51, U54, UL1, and R07 activity codes. The UL1 activity was formerly classified as Other Research but was reclassified as Research Centers in fiscal year 2013. Not all of these activities may be in use by NIH every year.
Source: NIH IMPAC, Pub File.