Year US Dollars adjusted for inflation) 1960 1483222500.02235 1961 1607082357.71301 1962 1690687744.44949 1963 1622564856.43391 1964 1684494851.31753 1965 1746424761.04652 1966 1770158367.26747 1967 1807619734.17443 1968 1945565093.23842 1969 2092426564.46621 1970 2225472883.76455 1971 2398014594.34025 1972 2604664721.26091 1973 2819059595.83329 1974 3041357126.8935 1975 3276502598.38538 1976 3306524757.67021 1977 3010477444.83379 1978 3201936194.12491 1979 3516149388.85633 1980 4136278784.63796 1981 4865079626.99001 1982 6013126520.1682 1983 6365132712.17241 1984 6809172712.07804 1985 6728439016.68609 1986 6266765394.7755 1987 6278633184.55009 1988 6389530386.35617 1989 6555650286.42864 1990 6621207023.12928 1991 6779809261.2278 1992 6956894357.17029 1993 6888738831.47006 1994 6510335189.58292 1995 6769793164.98691 1996 7060249892.08572 1997 7016136592.97449 1998 7278368400.54242 1999 7090426418.46915 2000 7627595733.65268 2001 7917642833.95722 2002 8280418940.53943 2003 8347760613.01877 2004 8637981498.28454 2005 9307922523.85313 2006 9888364294.38467 2007 9731908344.8726 2008 10274192976.075 2009 11041566540.1611 2010 12007880438.6232 2011 12418629883.7549 2012 12890534256.7459 2013 13334059545.5669 2014 14238097603.1698 2015 14614906845.3719 2016 14205686707.8991 2017 13553775872.0588