Year current US$ 1970 89999.99798834321 1971 89999.9998509885 1972 1759999.9941885497 1973 4719999.88146126 1974 8559999.899938699 1975 13559999.931603715 1976 7790000.1145899305 1977 8129999.980330462 1978 16400000.423192978 1979 20069999.933242813 1980 18569999.884814017 1981 15390000.045299537 1982 18860000.193119057 1983 20330000.16212464 1984 19819999.63708217 1985 11759999.949485064 1986 15659999.761730433 1987 20099999.668076638 1988 19829999.718815036 1989 14680000.210180875 1990 14710000.153630985 1991 28930000.4392862 1992 45259999.54529107 1993 29059999.393299244 1994 47009999.05914064 1995 57749999.11524362 1996 47660000.57570637 1997 50359999.31953849 1998 45399999.81597065 1999 49770000.04425643 2000 49700000.26375055 2001 47269999.13901091 2002 52390000.01177191 2003 53369999.302551165 2004 62340000.061318316 2005 111990000.55529177 2006 91740000.9222329 2007 141039997.80118454 2008 152590000.20101666 2009 90449999.6285886 2010 143759997.44608998 2011 142059998.34276745 2012 129009998.08311462 2013 162579999.02963632 2014 150559995.7685917 2015 105460000.54478642 2016 119069999.91089104 2017 100370000.8690358 2018 83959999.88913542 2019 105940000.44465062 2020 118229999.49753287 2021 86510000.47661363 2022 136279999.166727