Year Percent of GDP (Units) 2000 446.485 2001 437.877 2002 430.909 2003 550.960 2004 490.969 2005 434.832 2006 392.871 2007 290.961 2008 186.691 2009 103.427 2010 15.644 2011 15.818 2012 14.207 2013 14.620 2014 23.874 2015 15.246 2016 28.571 2017 31.800 2018 37.103 2019 48.531 2020 58.676 2021 53.308 2022 53.904 2023 55.744 2024 56.089 2025 57.276 2026 57.386 2027 57.754 2028 57.238 2029 56.358