Year current US$ 2001 19999.9995529652 2011 1669999.95708466 2012 620000.004768372 2013 379999.99523162795 2014 159999.99642372102 2015 319999.99284744303 2016 109999.999403954 2017 50000.0007450581 2018 70000.0002980232 2019 9999.99977648258 2020 19999.9995529652 2021 29999.999329447703 2022 19999.9995529652