New survey data result in an upward revision of the previously published 2011 U.S. research and development performance total and imply a sizable further expansion in 2012. These new data puts U.S. R&D expenditures at $428.2 billion in 2011, an increase of $20.5 billion over the 2010 level ( table 1, figure 1 ). The preliminary estimate of the 2012 U.S. total for R&D is $452.6 billion.
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