Year current US$ 1964 39999.9991059303 1965 19999.9995529652 1966 39999.9991059303 1968 6170000.07629395 1969 2259999.99046326 1970 509999.99046325695 1971 330000.013113022 1972 469999.998807907 1973 439999.997615814 1974 670000.016689301 1975 1629999.99523163 1976 1720000.02861023 1977 2069999.9332428002 1978 1779999.97138977 1979 1190000.0572204601 1980 360000.01430511504 1981 300000.011920929 1982 300000.011920929 1984 39999.9991059303 1985 70000.0002980232 1986 109999.999403954 1987 100000.00149011599 1988 230000.004172325 1989 310000.002384186 1990 400000.00596046395 1991 490000.009536743 1992 250000 1993 170000.00178813902 1994 140000.000596046 1995 209999.993443489 1996 1470000.02861023 1997 689999.997615814 1998 219999.998807907 1999 720000.028610229 2000 479999.989271164 2001 1080000.04291534 2002 3079999.92370605 2003 4449999.80926514 2004 5480000.01907349 2005 2930000.0667572 2006 2910000.08583069 2007 3250000 2008 6269999.98092651 2009 9170000.07629395 2010 14069999.6948242 2011 11829999.923706101 2012 9340000.15258789 2013 10159999.8474121 2014 12649999.6185303 2015 17649999.6185303 2016 15670000.076293899 2017 34369998.9318848 2018 21610000.6103516 2019 20959999.084472697 2020 18079999.9237061 2021 17139999.3896484 2022 21409999.8474121