Year Percent of GDP (Units) 2000 36.627 2001 25.477 2002 19.447 2003 6.713 2004 4.526 2005 2.849 2006 1.220 2007 0.754 2008 0.488 2009 4.337 2010 7.894 2011 7.170 2012 7.097 2013 6.272 2014 12.560 2015 11.691 2016 25.790 2017 30.697 2018 30.619 2019 31.837 2020 38.391 2021 28.875 2022 13.269 2023 22.398 2024 22.816 2025 25.953 2026 30.676 2027 31.126 2028 33.233 2029 35.470