Year current US$ 2010 509999.99046325695 2011 2049999.9523162802 2012 1060499.31049347 2015 1656100.39234161 2016 2586666.1071777297 2017 7387805.938720699 2018 8931555.74798584 2019 14843126.2969971 2020 3436130.04684448 2021 6371240.13900757 2022 2143268.3467865