Year Percent of GDP (Units) 2000 9.447 2001 7.159 2002 8.654 2003 7.570 2004 10.611 2005 9.614 2006 10.828 2007 11.469 2008 11.097 2009 12.706 2010 11.627 2011 13.530 2012 16.296 2013 12.114 2014 15.046 2015 14.203 2016 13.148 2017 19.273 2018 15.085 2019 21.189 2020 22.979 2021 16.730 2022 17.372 2023 21.610 2024 20.092 2025 19.585 2026 19.517 2027 18.918 2028 18.892 2029 19.919