Year current US$ 2014 771559851.3738179 2015 855562217.2570909 2016 955760605.9692452 2017 992231739.2563334 2018 1103545291.0537624 2019 1162166944.7753644 2020 843842351.6017396 2021 970968580.3350033 2022 1110787233.3143926 2023 1223972717.223824