Year Percent of GDP (Units) 2008 0.406 2009 5.325 2010 6.455 2011 12.455 2012 10.672 2013 11.446 2014 13.768 2015 15.878 2016 19.002 2017 19.856 2018 23.492 2019 25.450 2020 34.054 2021 35.343 2022 39.168 2023 45.978 2024 46.165 2025 46.566 2026 46.346 2027 46.296 2028 46.826 2029 46.605