Year current US$ 1990 39999.9991059303 1991 19999.9995529652 1995 9999.99977648258 1997 9999.99977648258 2002 9999.99977648258 2003 19999.9995529652 2004 29999.999329447703 2008 349999.99403953605 2009 29999.999329447703 2010 9999.99977648258 2015 39999.9991059303 2016 39999.9991059303 2017 119999.997317791 2018 39999.9991059303 2019 90000.0035762787 2020 59999.9986588955 2021 90000.0035762787