Year current US$ 2006 19999.9995529652 2007 109999.999403954 2008 50000.0007450581 2009 109999.999403954 2010 39999.9991059303 2011 50000.0007450581 2012 19999.9995529652 2013 19999.9995529652 2014 29999.999329447703 2015 0 2017 29999.999329447703 2018 39999.9991059303 2019 79999.9982118607 2021 79999.9982118607 2022 50000.0007450581