Year current US$ 2005 819999.992847443 2006 639999.985694885 2007 289999.99165535 2009 79999.9982118607 2010 289999.99165535 2012 79999.9982118607 2013 79999.9982118607 2014 79999.9982118607 2015 70000.0002980232 2016 39999.9991059303 2017 29999.999329447703 2018 29999.999329447703 2019 19999.9995529652 2020 9999.99977648258 2021 0 2022 0