Year Percent of GDP (Units) 2014 14.743 2015 17.439 2016 13.942 2017 19.577 2018 22.655 2019 26.826 2020 5.595 2021 10.781 2022 18.231 2023 15.194 2024 16.622 2025 17.542 2026 17.444 2027 17.958 2028 19.030 2029 20.112