Year Percent of GDP (Units) 2013 1.888 2014 2.255 2015 2.064 2016 2.314 2017 3.254 2018 3.264 2019 3.591 2020 5.399 2021 3.827 2022 6.929 2023 6.347 2024 7.061 2025 5.861 2026 4.810 2027 4.424 2028 4.429 2029 4.535