Year current US$ 1974 9999.99977648258 1975 9999.99977648258 1976 9999.99977648258 1978 29999.999329447703 1979 19999.9995529652 1980 19999.9995529652 1982 39999.9991059303 1983 39999.9991059303 1984 19999.9995529652 1985 70000.0002980232 1986 59999.9986588955 1987 19999.9995529652 1988 19999.9995529652 1989 39999.9991059303 1990 19999.9995529652 1994 19999.9995529652 2006 19999.9995529652 2010 670000.016689301 2011 2000000 2012 300000.011920929 2013 209999.993443489 2014 259999.990463257 2015 170000.00178813902 2016 90000.0035762787 2017 109999.999403954 2018 59999.9986588955 2019 29999.999329447703 2021 9999.99977648258 2022 9999.99977648258