Year % of GDP 1995 16.2672496895273 1996 16.34781471086645 1997 16.658835129451457 1998 16.552546524866322 1999 16.299689620847275 2000 16.232590518498853 2001 15.832540410531918 2002 15.240970606442247 2003 14.704848516576796 2004 14.170672195867759 2005 13.709175646487815 2006 13.335219456019637 2007 12.899113839665507 2008 12.695520039367631 2009 11.589762868656148 2010 11.39759245051547 2011 11.498613882979573 2012 11.124871981875737 2013 11.18698667649021 2014 11.303224456909108 2015 11.294026854850978 2016 11.264962940363597 2017 11.327991934568152 2018 11.026872748386648 2019 10.91381623475628 2020 10.99105459289908 2021 11.305745772279902 2022 11.404829405136898 2023 11.488081516448924