Year current US$ 2008 29999.999329447703 2010 9999.99977648258 2012 0 2013 9999.99977648258 2014 19999.9995529652 2015 0 2016 19999.9995529652 2017 39999.9991059303 2018 70000.0002980232 2019 39999.9991059303 2020 50000.0007450581 2021 50000.0007450581 2022 19999.9995529652