Year current US$ 1962 2000000 1966 300000.011920929 1967 300000.011920929 1968 370000.00476837205 1969 419999.986886978 1970 340000.00357627904 1971 330000.013113022 1972 300000.011920929 1973 600000.023841858 1974 600000.023841858 1975 779999.971389771 1976 759999.990463257 1977 1049999.95231628 1978 889999.985694885 1979 1100000.02384186 1980 1139999.98569489 1981 1000000 1982 810000.002384186 1983 1429999.94754791 1984 1090000.0333786 1985 1450000.04768372 1986 1299999.95231628 1987 1740000.0095367401 1988 2150000.09536743 1989 1309999.9427795399 1990 2910000.08583069 1991 3380000.1144409203 1992 5320000.17166138 1993 5280000.20980835 1994 4309999.94277954 1995 7070000.17166138 1996 4969999.79019165 1997 5260000.228881841 1998 4869999.88555908 1999 3680000.0667572 2000 4690000.05722046 2001 2720000.02861023 2002 2920000.07629395 2003 3809999.94277954 2004 4780000.20980835 2005 4480000.01907349 2006 4389999.8664856 2007 4940000.05722046 2008 4030000.2098083496 2009 4179999.8283386203 2010 3960000.03814697 2011 4460000.03814697 2012 3730000.01907349 2013 4750000 2014 2880000.1144409203 2015 2420000.07629395 2016 1889999.98569489 2017 1149999.97615814 2018 1269999.98092651 2019 1230000.01907349 2020 1980000.01907349 2021 1480000.01907349 2022 850000.023841858