Year Percent of GDP (Units) 2011 25.417 2012 16.808 2013 21.886 2014 27.040 2015 17.135 2016 35.589 2017 70.269 2018 47.648 2019 47.968 2020 28.601 2021 34.816 2022 31.750 2023 33.748 2024 31.399 2025 31.707 2026 31.815 2027 31.285 2028 30.452 2029 28.155