Year current US$ 1972 50000.0007450581 1974 50000.0007450581 1975 29999.999329447703 1976 59999.9986588955 1979 9999.99977648258 1980 39999.9991059303 1981 289999.99165535 1983 129999.995231628 1984 29999.999329447703 1985 159999.99642372102 1986 50000.0007450581 1987 9999.99977648258 1988 90000.0035762787 1989 70000.0002980232 1990 109999.999403954 1991 150000.005960464 1992 129999.995231628 1993 29999.999329447703 1994 9999.99977648258 1995 100000.00149011599 1996 90000.0035762787 1997 79999.9982118607 1998 50000.0007450581 1999 250000 2000 50000.0007450581 2001 349999.99403953605 2002 500000 2003 529999.971389771 2004 529999.971389771 2005 1029999.97138977 2006 1220000.02861023 2007 1190000.0572204601 2008 2190000.05722046 2009 2549999.95231628 2010 2059999.94277954 2011 1779999.97138977 2012 1620000.00476837 2013 1980000.01907349 2014 1559999.9427795399 2015 1230000.01907349 2016 790000.021457672 2017 10460000.038146999 2018 529999.971389771 2019 769999.980926514 2020 1440000.0572204601 2021 1149999.97615814 2022 639999.985694885