Year current US$ 1973 59999.9986588955 1979 129999.995231628 1981 330000.013113022 1982 439999.997615814 1983 1039999.96185303 1984 159999.99642372102 1985 209999.993443489 1986 239999.994635582 1987 699999.988079071 1988 589999.973773956 1989 449999.988079071 1990 750000 1991 2740000.00953674 1992 7099999.90463257 1993 1490000.0095367401 1994 2369999.8855590797 1995 3680000.0667572 1996 2529999.97138977 1997 3170000.07629395 1998 2910000.08583069 1999 1419999.95708466 2000 930000.007152557 2001 389999.98569488496 2002 600000.023841858 2003 1049999.95231628 2004 1250000 2005 1059999.9427795399 2006 639999.985694885 2007 500000 2008 689999.997615814 2009 560000.002384186 2010 170000.00178813902 2011 259999.990463257 2012 180000.00715255702 2013 189999.99761581398 2014 219999.998807907 2015 200000.00298023198 2016 1980000.01907349 2017 119999.997317791 2018 119999.997317791 2019 109999.999403954 2020 219999.998807907 2021 790000.021457672 2022 740000.009536743