This link http://www.nsf.gov/statistics/seind12/slides_tn.htm#g3 provides excellent data (in ppt and excel formats) included in the pdf overview of the S&E Indicators report which focuses on the trend in the United States and many other parts of the world toward the development of more knowledge-intensive economies in which research, its commercial exploitation, and other intellectual work are of growing importance. Industry and government play key roles in these changes. The pdf report can also be accessed.
Businesses in the United States are focusing a large portion of their research and development efforts on health and defense, according to a National Science Foundation (NSF) report released today. Of the $290.7 billion in total R&D that was performed by businesses in the United States in 2008, 40 percent was applied to health and medical areas ($76.1 billion) and defense areas ($41.5 billion). More than 86 percent of the health or medical R&D performed by businesses was paid for by the reporting companies themselves. However, the federal government funded most of the defense R&D performed by companies.
More at http://www.nsf.gov/news/news_summ.jsp?cntn_id=125240&WT.mc_id=USNSF_51&WT.mc_ev=click