Year current US$ 2012 1140555966.6205614 2013 1236319008.842386 2014 1313558321.6984177 2015 1121114408.3668675 2016 1058930587.4475144 2017 1185116161.6027486 2018 1323479817.6029847 2019 1551288492.7177606 2020 1378199162.6454358 2021 1523088512.614884 2022 2026514563.7753344 2023 2594381114.961272