Year current US$ 1998 39999.9991059303 2007 9999.99977648258 2008 79999.9982118607 2009 39999.9991059303 2010 9999.99977648258 2011 90000.0035762787 2012 59999.9986588955 2013 79999.9982118607 2014 70000.0002980232 2015 29999.999329447703 2016 29999.999329447703 2017 39999.9991059303 2018 39999.9991059303 2019 29999.999329447703 2020 29999.999329447703 2021 39999.9991059303 2022 9999.99977648258