Year current US$ 1966 79999.9982118607 1967 109999.999403954 1968 59999.9986588955 1969 90000.0035762787 1970 50000.0007450581 1971 39999.9991059303 1972 9999.99977648258 1973 109999.999403954 1974 170000.00178813902 1975 319999.99284744303 1976 389999.98569488496 1977 100000.00149011599 1978 550000.011920929 1979 540000.021457672 1980 529999.971389771 1981 310000.002384186 1982 310000.002384186 1983 219999.998807907 1984 180000.00715255702 1985 250000 1986 519999.980926514 1987 419999.986886978 1988 409999.99642372096 1989 9999.99977648258 1990 790000.021457672 1991 280000.001192093 1992 720000.028610229 1993 759999.990463257 1994 709999.978542328 1995 519999.980926514 1996 349999.99403953605 1997 560000.002384186 1998 349999.99403953605 1999 370000.00476837205 2000 259999.990463257 2001 449999.988079071 2002 419999.986886978 2003 670000.016689301 2004 1159999.9666214 2005 142009994.506836 2006 197369995.117188 2007 899999.976158142 2008 3700000.04768372 2009 280000.001192093 2010 289999.99165535 2011 39999.9991059303 2012 19999.9995529652 2013 19999.9995529652 2014 150000.005960464 2015 340000.00357627904 2016 3549999.95231628 2017 10850000.3814697 2018 5179999.82833862 2019 5909999.84741211 2020 7449999.80926514 2021 5940000.05722046 2022 7030000.20980835