Year US Dollars adjusted for inflation) 1960 17862545310.7226 1961 18944687033.1706 1962 19977746684.2347 1963 19886669277.8428 1964 22064814112.6956 1965 22419232005.0757 1966 22994691542.7769 1967 22563342420.6917 1968 24704480424.0584 1969 25006087027.2168 1970 26411392182.3557 1971 24964184430.47109 1972 21475757025.47919 1973 22189972024.4145 1974 24318424444.0714 1975 23324235189.0411 1976 24644704390.5094 1977 25303471152.2294 1978 27093397642.2551 1979 28394323597.912 1980 28626913390.8931 1981 30697768187.18019 1982 31352959198.5596 1983 32569782092.7714 1984 34134209697.98 1985 35274979988.1662 1986 36747139850.68449 1987 38133389635.1624 1988 39054790276.51839 1989 40162611478.05148 1990 42420657179.79079 1991 43899113723.2774 1992 46288404442.78889 1993 48469311189.39449 1994 50354828679.5772 1995 52933639390.89799 1996 55327785139.4964 1997 57811945426.5395 1998 60804885377.3372 1999 63644568604.01141 2000 67013463192.51449 2001 70415929567.4442 2002 73115059421.30701 2003 76580396941.519 2004 80592852042.2251 2005 85860356477.70261 2006 91588846353.8372 2007 98053769823.29111 2008 103950517391.466 2009 109194950718.05901 2010 115279077465.22597 2011 122731159566.44901 2012 130734992458.51001 2013 138596866823.80203 2014 146997351891.57996 2015 156629549345.30701 2016 167771337874.21802 2017 179992151721.96396