Year current US$ 1973 29999.999329447703 1974 29999.999329447703 1975 19999.9995529652 1985 9999.99977648258 1986 9999.99977648258 1987 19999.9995529652 1988 29999.999329447703 1989 70000.0002980232 1990 50000.0007450581 1991 70000.0002980232 1992 140000.000596046 1994 90000.0035762787 1995 59999.9986588955 1996 39999.9991059303 1997 70000.0002980232 1998 129999.995231628 1999 9999.99977648258 2000 79999.9982118607 2001 70000.0002980232 2002 19999.9995529652 2003 119999.997317791 2004 170000.00178813902 2005 230000.004172325 2006 319999.99284744303 2007 180000.00715255702 2008 449999.988079071 2009 280000.001192093 2010 200000.00298023198 2011 189999.99761581398 2012 109999.999403954 2013 109999.999403954 2014 119999.997317791 2015 59999.9986588955 2017 70000.0002980232 2018 90000.0035762787 2019 79999.9982118607 2020 79999.9982118607