Year current US$ 1970 -404839609.4839609 1971 -494459363.9575972 1972 -399770200.148258 1973 -808299264.1046606 1974 -2073433307.0244672 1975 -1851043137.254902 1976 -2113779840.8488066 1977 -2499565217.3913045 1978 -2256546532.8467155 1979 -2220319672.1311474 1980 -3725442531.037245 1981 -4769358306.188925 1982 -4394442482.341068 1983 -2676254071.6612377 1984 -1526440701.1777596 1985 -822089657.6067773 1986 -786655944.243399 1987 -2360348655.187135 1988 -4466105849.582173 1989 -3598389355.742297 1990 -5287396990.577978 1991 -6488605522.40877 1992 -7950987525.987526 1993 -6626869467.647426 1994 -6888712560.386474 1995 -7530287912.962717 1996 -8722525344.424227 1997 -9357416809.605488 1998 -11362958593.05432 1999 -13193669761.512384 2000 -13098469051.822773 2001 -12424660028.76222 2002 -11001387195.767862 2003 -10582015649.07096 2004 -14905302069.639034 2005 -17311334502.898045 2006 -16350314965.687037 2007 -18176093820.033794 2008 -25165708546.337494 2009 -16894818154.45702 2010 -18202971434.91669 2011 -10270004538.929981 2012 -1069897488.1945314 2013 2487546493.798418 2014 343998007.5878419 2015 1474193135.0800774 2016 2368570098.2089553 2017 2234369286.592945 2018 1121127354.337254 2019 1085043951.7803905 2020 -4910305641.15799 2021 -7212414278.829342 2022 -6143125612.229596 2023 2389513921.3706303