Year current US$ 1975 39999.9991059303 1983 9999.99977648258 1984 460000.00834465 1986 310000.002384186 1991 29999.999329447703 1992 39999.9991059303 2000 9999.99977648258 2001 39999.9991059303 2002 50000.0007450581 2003 59999.9986588955 2004 100000.00149011599 2005 180000.00715255702 2006 189999.99761581398 2007 129999.995231628 2008 119999.997317791 2009 109999.999403954 2010 730000.019073486 2011 1169999.95708466 2012 1460000.03814697 2013 2730000.01907349 2014 930000.007152557 2015 839999.973773956 2016 500000 2017 349999.99403953605 2018 250000 2019 209999.993443489 2020 689999.997615814 2021 1139999.98569489 2022 560000.002384186