Please wait viagra and aspirin mix The revisions will also alter GDP data all the way back to 1929. In one major change, the government plans to count spending on research and development as investment, rather than as a regular cost of doing business. That, along with other changes, will boost the level of GDP in 2007 by about 3 percent, or $450 billion. It isn't likely to significantly change the pace of growth in recent years.
