Year Percent of GDP (Units) 2014 18.273 2015 17.733 2016 20.057 2017 20.940 2018 24.285 2019 24.919 2020 32.419 2021 30.109 2022 29.082 2023 44.380 2024 45.443 2025 27.165 2026 26.414 2027 25.405 2028 24.476 2029 23.874