Year current US$ 2013 59999.9986588955 2014 50000.0007450581 2015 90000.0035762787 2016 39999.9991059303 2017 59999.9986588955 2018 109999.999403954 2019 39999.9991059303 2020 29999.999329447703 2021 1419999.95708466 2022 270000.010728836