Year current US$ 1979 39999.9991059303 1981 9999.99977648258 1982 39999.9991059303 1983 29999.999329447703 1985 29999.999329447703 1986 9999.99977648258 1989 19999.9995529652 1994 19999.9995529652 2006 9999.99977648258 2010 239999.994635582 2011 1059999.9427795399 2012 189999.99761581398 2013 189999.99761581398 2014 319999.99284744303 2015 59999.9986588955 2016 39999.9991059303 2017 529999.971389771 2018 740000.009536743 2019 50000.0007450581 2021 29999.999329447703