Year current US$ 1972 369999.99545514566 1973 239999.99649822703 1974 449999.999254942 1975 1739999.9909102945 1976 1769999.9529868334 1977 2870000.069960953 1978 3670000.0856071725 1979 3589999.9700486683 1980 3649999.9407678843 1981 4700000.036507842 1982 3330000.0019371486 1983 2959999.9561905856 1984 4379999.950528145 1985 4779999.868944292 1986 5289999.917149543 1987 12019999.634474516 1988 6989999.92758036 1989 8350000.031292429 1990 7669999.953359361 1991 8879999.926313763 1992 7559999.821707603 1993 10140000.056475399 1994 10149999.964982267 1995 13269999.841228124 1996 15020000.338554384 1997 18059999.987483013 1998 15910000.02808869 1999 20269999.99769032 2000 18989999.77670611 2001 19900000.28908253 2002 21209999.911487103 2003 38810000.35628676 2004 48169999.4523078 2005 49509999.9941885 2006 51649998.774752066 2007 51190000.05722045 2008 73589998.79285695 2009 61759999.278932855 2010 72170000.13962382 2011 86669998.67185947 2012 102039999.35090548 2013 85410000.16778709 2014 102390000.46812004 2015 97679999.92892133 2016 81110002.19732521 2017 102510001.04099514 2018 106000000.3110618 2019 117379997.98171222 2020 115490001.09918424 2021 136089998.62149358 2022 93909998.77452849