Year Percent of GDP (Units) 2000 33.477 2001 30.163 2002 27.870 2003 22.273 2004 17.071 2005 15.778 2006 12.124 2007 18.652 2008 31.312 2009 48.848 2010 42.699 2011 70.318 2012 60.008 2013 41.766 2014 43.123 2015 36.825 2016 39.578 2017 34.932 2018 35.267 2019 26.530 2020 16.010 2021 14.404 2022 10.597 2023 17.689 2024 13.819 2025 19.454 2026 22.987 2027 26.166 2028 29.583 2029 32.401