Net Interest as a Percentage of Total Federal Revenue 1941 10.8 1942 7.2 1943 6.4 1944 5.1 1945 6.9 1946 10.5 1947 10.9 1948 10.4 1949 11.5 1950 12.2 1951 9.0 1952 7.1 1953 7.4 1954 6.9 1955 7.4 1956 6.8 1957 6.7 1958 7.0 1959 7.3 1960 7.5 1961 7.1 1962 6.9 1963 7.3 1964 7.3 1965 7.4 1966 7.2 1967 6.9 1968 7.2 1969 6.8 1970 7.5 1971 7.9 1972 7.5 1973 7.5 1974 8.1 1975 8.3 1976 9.0 1977 8.4 1978 8.9 1979 9.2 1980 10.2 1981 11.5 1982 13.8 1983 15.0 1984 16.7 1985 17.6 1986 17.7 1987 16.2 1988 16.7 1989 17.0 1990 17.9 1991 18.4 1992 18.3 1993 17.2 1994 16.1 1995 17.2 1996 16.6 1997 15.4 1998 14.0 1999 12.6 2000 11.0 2001 10.4 2002 9.2 2003 8.6 2004 8.5 2005 8.5 2006 9.4 2007 9.2 2008 10.0 2009 8.9 2010 9.1 2011 10.0 Source: Office of Management and  Budget. Note: Data from Budget of the United States Government for Fiscal Year 2013–Historical Tables.