Year Percent of GDP (Units) 1995 11.708 1996 11.414 1997 11.430 1998 9.659 1999 12.270 2000 13.363 2001 11.412 2002 13.121 2003 14.196 2004 9.365 2005 8.447 2006 10.129 2007 12.358 2008 13.657 2009 18.697 2010 18.240 2011 16.784 2012 18.323 2013 17.514 2014 16.898 2015 13.845 2016 10.937 2017 11.239 2018 9.608 2019 10.538 2020 14.346 2021 13.810 2022 13.873 2023 20.359 2024 16.975 2025 16.603 2026 16.126 2027 16.221 2028 16.100 2029 16.096