Year Purchasing power parity; international dollars (Units) 2011 3128.898 2012 1341.084 2013 1577.529 2014 1488.105 2015 1409.845 2016 851.581 2017 458.770 2018 445.386 2019 443.007 2020 407.485 2021 436.229 2022 430.252 2023 433.063 2024 455.157 2025 480.724 2026 500.914 2027 522.458 2028 546.463 2029 572.417