Year current US$ 1974 9999.99977648258 1975 39999.9991059303 1976 19999.9995529652 1977 19999.9995529652 1978 79999.9982118607 1979 460000.00834465 1980 2410000.08583069 1981 270000.010728836 1982 850000.023841858 1983 219999.998807907 1984 140000.000596046 1985 90000.0035762787 1986 6199999.80926514 1987 6889999.8664856 1988 1289999.96185303 1989 519999.980926514 1990 2400000.09536743 1991 2190000.05722046 1992 1750000 1993 1179999.94754791 1994 400000.00596046395 1995 39999.9991059303 1996 280000.001192093 1997 59999.9986588955 1998 70000.0002980232 1999 29999.999329447703 2000 29999.999329447703 2001 189999.99761581398 2002 400000.00596046395 2003 230000.004172325 2004 -19999.9995529652 2005 1259999.9904632599 2006 409999.99642372096 2007 1710000.03814697 2008 2339999.91416931 2009 3009999.99046326 2010 4780000.20980835 2011 3759999.99046326 2012 3430000.0667572 2013 150000.005960464 2014 4150000.09536743 2015 150000.005960464 2016 -39999.9991059303 2017 -70000.0002980232 2020 1330000.04291534 2021 1379999.99523163 2022 119999.997317791