Table 4-13
Research and experimentation tax credit claims: 1990–99
 
Year Billions of
current dollars
Number of
tax returns
1990 1.547 8,699
1991 1.585 9,001
1992 1.515 7,750
1993 1.857 9,933
1994 2.423 9,150
1995 1.422 7,877
1996 2.134 9,709
1997 4.398 10,668
1998 5.208 9,849
1999 5.281 10,020
 
SOURCE: U.S. Department of the Treasury, Internal Revenue Service, Statistics of Income, unpublished tabulations.
 
Science & Engineering Indicators — 2004
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