Year current US$ 1972 29999.999329447783 1973 19999.9995529652 1974 89999.99798834321 1975 469999.99508261634 1976 839999.9886751166 1977 559999.9912083141 1978 580000.0131130216 1979 1050000.028684736 1980 559999.9949336054 1981 469999.9857693908 1982 19999.99955296516 1983 49999.99888241287 1984 89999.99985098842 1985 239999.99277293647 1986 229999.99485909945 1987 280000.00119209255 1988 380000.0008195638 1989 329999.99821186066 1990 459999.99716877897 1991 389999.99500811123 1992 309999.9967962502 1993 639999.9950081111 1994 679999.9959766864 1995 1349999.992176889 1996 1150000.0003725279 1997 2029999.9900162206 1998 1399999.9724328504 1999 1840000.0128895035 2000 1449999.9787658453 2001 2409999.9777972684 2002 1770000.0256299959 2003 2429999.988526106 2004 2809999.989345669 2005 3169999.929144978 2006 4350000.020116571 2007 4039999.9488145104 2008 3110000.0143051147 2009 2149999.994784593 2010 4050000.0603497038 2011 2670000.0334531064 2012 1760000.007227064 2013 1850000.0033527592 2014 3159999.9442696557 2015 4640000.028535722 2016 4380000.006407499 2017 4930000.001564618 2018 3640000.0210851426 2019 4110000.018030408 2020 2640000.008046627 2021 3619999.9172240477 2022 809999.9967962505