Year current US$ 1966 9999.99977648258 1967 50000.0007450581 1968 90000.0035762787 1969 59999.9986588955 1970 70000.0002980232 1971 100000.00149011599 1972 100000.00149011599 1973 219999.998807907 1974 270000.010728836 1975 200000.00298023198 1976 159999.99642372102 1977 159999.99642372102 1978 280000.001192093 1979 310000.002384186 1980 1159999.9666214 1981 550000.011920929 1982 469999.998807907 1983 1149999.97615814 1984 540000.021457672 1985 360000.01430511504 1986 250000 1987 230000.004172325 1988 550000.011920929 1989 870000.004768372 1990 2549999.95231628 1991 600000.023841858 1992 219999.998807907 1993 959999.978542328 1994 3069999.9332428 1995 1190000.0572204601 1996 4730000.01907349 1997 3250000 1998 1610000.01430511 1999 1220000.02861023 2000 1090000.0333786 2001 920000.016689301 2002 600000.023841858 2003 660000.026226044 2004 660000.026226044 2005 560000.002384186 2006 540000.021457672 2007 360000.01430511504 2008 219999.998807907 2009 689999.997615814 2010 670000.016689301 2011 1870000.00476837 2012 1159999.9666214 2013 2069999.9332428002 2014 2559999.94277954 2015 4409999.84741211 2016 3880000.1144409203 2017 4139999.8664856004 2018 4300000.19073486 2019 4400000.09536743 2020 3799999.95231628 2021 2940000.05722046 2022 3420000.07629395