Year current US$ 2007 19999.9995529652 2008 9999.99977648258 2011 59999.9986588955 2013 9999.99977648258 2015 0 2016 0 2017 0 2018 0 2019 0 2020 19999.9995529652 2021 19999.9995529652 2022 9999.99977648258