Year US Dollars adjusted for inflation) 1960 54020839834.63548 1961 58128946694.1798 1962 59862320225.3108 1963 61828857088.95609 1964 65067877138.90591 1965 68518334138.5461 1966 70144152940.6732 1967 71665459589.29788 1968 73316122941.6881 1969 80349549608.1422 1970 84635320495.27609 1971 86630107555.3454 1972 93331366979.25859 1973 99849469096.26509 1974 103081130725.90701 1975 104941639688.052 1976 105303040819.57501 1977 105555252558.09299 1978 108637157806.075 1979 116374216221.742 1980 122645677924.149 1981 124233662847.21901 1982 128069196072.58301 1983 132066309081.61099 1984 136311089463.963 1985 141131994484.79303 1986 144979447530.26303 1987 150139405211.89798 1988 157961456050.63998 1989 165998063651.29797 1990 167119851165.75998 1991 157235671448.60303 1992 152008168119.69797 1993 150891678303.061 1994 156835695262.80899 1995 163433977903.95599 1996 169413754324.02301 1997 180005176700.82999 1998 189776780339.20401 1999 198210715276.74396 2000 209379586716.48499 2001 214783238498.07498 2002 218392295141.41599 2003 222747002753.63803 2004 231492177438.40097 2005 237927555871.42599 2006 247575988035.367 2007 260412309865.55493 2008 262289019320.09201 2009 240600244424.18304 2010 247799815768.47696 2011 254170297403.14496 2012 250545347666.32898 2013 248646122996.035 2014 247075355590.897 2015 247409110553.87692 2016 252692239709.94592 2017 259348797027.16904