Year current US$ 2009 19999.9995529652 2012 50000.0007450581 2013 19999.9995529652 2014 39999.9991059303 2015 140000.000596046 2016 310000.002384186 2017 310000.002384186 2018 1409999.9666214 2019 2180000.0667572 2020 2519999.98092651 2021 3119999.8855590797 2022 4449999.80926514