Year % of GDP 1993 11.88040710122236 1994 11.938550810438459 1995 14.552316844501881 1996 14.720055813212804 1997 15.020499840638632 1998 11.833769661817307 1999 16.98372801907513 2000 17.528993197204006 2001 18.735343130676938 2002 20.020768762448267 2003 22.06927849088317 2004 17.826250907549642 2005 20.234678892621773 2006 22.516976454713877 2007 21.19729132569938 2008 18.616727856231357 2009 21.35991037508507 2010 17.367657196900346 2011 17.097914550501933 2012 18.511342313310976 2013 20.008916947167396 2014 22.094500189101794 2015 22.452998197435804 2016 22.705832647524236 2017 22.89196799172196 2018 23.448256176231506 2019 24.233488729402655 2020 24.879560233692775 2021 23.650070666280033 2022 22.74524558102703 2023 15.979136713893247