Year Percent of GDP (Units) 2014 23.601 2015 15.894 2016 17.925 2017 19.760 2018 24.153 2019 25.212 2020 19.162 2021 24.907 2022 16.136 2023 21.643 2024 20.471 2025 18.446 2026 22.670 2027 23.606 2028 25.193 2029 25.239