http://www.nsf.gov/statistics/infbrief/nsf09309/?govDel=USNSF_178
From the National Science Foundation:
"The most recent data from the National Science Foundation (NSF) show a $3.5 billion decline—from $116.7 billion in FY 2007 to $113.2 billion in FY 2008—in federal funds obligated for research and development and R&D plant (facilities and fixed equipment). Adjusted for inflation, the data reflect a 4.8% decrease in R&D and R&D plant obligations."