Year current US$ 1968 829999.983310699 1969 939999.997615814 1970 1409999.9666214 1971 1659999.9666214 1972 1750000 1973 2170000.07629395 1974 2140000.10490417 1975 3109999.89509583 1976 1580000.04291534 1977 1240000.0095367401 1978 1700000.04768372 1979 1220000.02861023 1980 1519999.98092651 1981 2559999.94277954 1982 3200000.04768372 1983 2349999.90463257 1984 1620000.00476837 1985 1750000 1986 2230000.01907349 1987 2420000.07629395 1988 2859999.89509583 1989 3869999.8855590797 1990 2549999.95231628 1991 2049999.9523162802 1992 1889999.98569489 1993 500000 1994 1389999.98569489 1995 2029999.97138977 1996 2250000 1997 7909999.84741211 1998 7260000.228881841 1999 2599999.90463257 2000 2009999.9904632599 2001 2130000.1144409203 2002 769999.980926514 2003 1039999.96185303 2004 5340000.15258789 2005 4130000.11444092 2006 4170000.07629395 2007 5369999.88555908 2008 7190000.05722046 2009 7590000.15258789 2010 8739999.77111816 2011 4449999.80926514 2012 4239833.83178711 2013 3976247.07221985 2014 5486704.3495178195 2015 5573246.00219727 2016 9874208.45031738 2017 4159823.4176635696 2018 6952331.54296875 2019 7298630.23757935 2020 7891890.52581787 2021 8246301.65100098 2022 7030863.2850647