Year current US$ 2013 401854592.31041914 2014 422859425.72909224 2015 482723563.33804107 2016 579079143.151344 2017 601512127.9983795 2018 622028751.2449288 2019 611931101.55806 2020 623916483.1393026 2021 615665091.3510503 2022 555111716.1168348 2023 593854249.6384783