Year current US$ 1970 649999.9929219477 1971 160000.0001490115 1972 339999.99798834353 1973 379999.99709427403 1974 690000.0143796208 1975 979999.9911338089 1976 5380000.084638594 1977 869999.9898672102 1978 710000.00834465 1979 940000.0274181371 1980 1769999.9846518054 1981 1969999.9988079069 1982 6950000.017881397 1983 5869999.960064882 1984 1430000.0276416535 1985 2869999.969378112 1986 679999.9885261059 1987 259999.9941885468 1988 1070000.0468641515 1989 1060000.0079721222 1990 5459999.956190582 1991 3360000.051558021 1992 4730000.037699934 1993 4049999.9858438936 1994 7669999.958947305 1995 9410000.232979655 1996 13980000.026524063 1997 18340000.19729137 1998 23069999.666884553 1999 36860000.58799979 2000 30859999.947249856 2001 24819999.989122152 2002 36080001.15305186 2003 82670000.26255849 2004 42620000.04760921 2005 41270000.396296404 2006 60300001.50203705 2007 39629998.84784222 2008 33020000.06660819 2009 26220000.592991754 2010 28380000.16286969 2011 45920000.04649155 2012 48899999.573826775 2013 125539996.37812379 2014 136859998.25224277 2015 160609999.70696867 2016 288820000.9465221 2017 320409998.77452826 2018 296699998.4234577 2019 288719993.8297272 2020 247640003.0180807 2021 242070000.246167 2022 213189997.2259999