Date Value Value
Dec 31, 2014 10.93% GDP
Dec 31, 2013 10.60% GDP
Dec 31, 2012 9.82% GDP
Dec 31, 2011 9.59% GDP
Dec 31, 2010 8.61% GDP
Dec 31, 2009 7.94% GDP
Dec 31, 2008 10.31% GDP
Dec 31, 2007 11.29% GDP
Dec 31, 2006 11.27% GDP
Dec 31, 2005 10.64% GDP
Dec 31, 2004 9.49% GDP
Dec 31, 2003 9.34% GDP
Dec 31, 2002 9.82% GDP
Dec 31, 2001 11.81% GDP
Dec 31, 2000 12.93% GDP
Dec 31, 1999 12.22% GDP
Dec 31, 1998 12.29% GDP
Dec 31, 1997 11.79% GDP
Dec 31, 1996 11.34% GDP
Dec 31, 1995 10.95% GDP
Dec 31, 1994 10.59% GDP
Dec 31, 1993 10.27% GDP
Dec 31, 1992 9.96% GDP
Dec 31, 1991 10.29% GDP
Dec 31, 1990 10.44% GDP
Dec 31, 1989 10.75% GDP
Dec 31, 1988 10.56% GDP
Dec 31, 1987 10.92% GDP
Dec 31, 1986 10.14% GDP
Dec 31, 1985 10.37% GDP
Dec 31, 1984 10.15% GDP
Dec 31, 1983 10.34% GDP
Dec 31, 1982 11.97% GDP
Dec 31, 1981 12.54% GDP
Dec 31, 1980 12.12% GDP
Dec 31, 1979 11.98% GDP
Dec 31, 1978 11.52% GDP
Dec 31, 1977 11.60% GDP
Dec 31, 1976 10.72% GDP
Dec 31, 1975 11.16% GDP
Dec 31, 1974 11.81% GDP
Dec 31, 1973 11.47% GDP
Dec 31, 1972 11.79% GDP

US tax revenue (percent of GDP). Excludes most social security contributions.

Source: World Bank > US > US Tax Revenue