Year US Dollars adjusted for inflation) 1960 2423938042.44681 1961 2688791931.57843 1962 2910475749.91244 1963 3158995127.32957 1964 3299005909.71103 1965 3601196047.2594 1966 3874217192.24828 1967 4205576322.35611 1968 4499015726.33311 1969 4878795152.56036 1970 5218321538.52545 1971 5720122516.9689 1972 5982265007.00328 1973 6303172259.88326 1974 6457494059.47271 1975 6569913828.9093 1976 6679267505.90311 1977 6752340421.67665 1978 7413573075.30916 1979 7748277445.8191 1980 8762099392.59522 1981 9568809187.72939 1982 10080592778.8534 1983 9627836628.92408 1984 9888700337.26354 1985 10377423013.0232 1986 10747667489.6719 1987 10553236221.8575 1988 9141229701.35737 1989 9284038288.61744 1990 10035951900.2528 1991 10981238786.2611 1992 11881884913.0139 1993 12530130085.509 1994 12887257233.6584 1995 13113000572.2306 1996 13647972061.8009 1997 14529766213.3699 1998 15596469214.4 1999 16207415135.4289 2000 16647506990.486 2001 16743109139.6405 2002 17116338076.7507 2003 17836164949.2211 2004 19177815562.25999 2005 20556945757.0629 2006 22335628458.0012 2007 25012326921.8513 2008 27477455533.61889 2009 27818998195.0188 2010 29440287600 2011 32771051605.8051 2012 35975676272.1291 2013 38459234340.855 2014 40407814913.9959 2015 42660859601.4214 2016 44789036003.0978 2017 47188170241.3263