Year Purchasing power parity; international dollars (Billions) 2011 32.693 2012 14.508 2013 17.633 2014 17.159 2015 16.752 2016 10.415 2017 5.774 2018 5.779 2019 5.926 2020 5.615 2021 6.185 2022 6.277 2023 6.502 2024 7.031 2025 7.642 2026 8.194 2027 8.794 2028 9.465 2029 10.202