Year US Dollars adjusted for inflation) 1960 135793184782.84497 1961 143508325287.24799 1962 149620019088.711 1963 157591620809.92703 1964 168341665008.642 1965 174774762865.52997 1966 178429017363.20099 1967 184434042265.90204 1968 191144218113.76697 1969 200719873587.384 1970 212847385915.80606 1971 214858040748.85199 1972 219775580084.19202 1973 228496233632.70001 1974 235803990191.26898 1975 241823742244.36102 1976 244382491014.88702 1977 240481514528.39395 1978 244693663790.46704 1979 254089909079.96698 1980 258409364912.52399 1981 259584689379.582 1982 262826031699.05002 1983 267821404946.151 1984 279149005660.63507 1985 285179667479.43604 1986 292854774009.89197 1987 302676663255.4939 1988 310422276216.20898 1989 318663388257.80298 1990 321068260388.53601 1991 317388898837.08295 1992 313711654101.28693 1993 307231574781.40009 1994 319789978736.341 1995 332659307767.38104 1996 337708614458.33997 1997 347503794934.66809 1998 362192056472.466 1999 378599909885.83807 2000 396527702705.12408 2001 402727057569.12097 2002 411077914064.11017 2003 420885165259.591 2004 439069634290.73914 2005 451444063836.52997 2006 472608335571.54211 2007 488700407872.375 2008 485978113843.76196 2009 460781805680.15198 2010 488377689564.92096 2011 501390063555.11108 2012 499954480439.36487 2013 506159940034.88702 2014 519341997812.70203 2015 542826483759.04401 2016 560386605247.82605 2017 573208900097.34009