Year % of GDP 1995 56.19374529041718 1996 56.24676885736473 1997 56.7000720746145 1998 58.995237135017696 1999 59.94233734340186 2000 56.51459036955513 2001 57.26631773811784 2002 57.78356288077342 2003 58.54671862620493 2004 58.47485271064957 2005 57.21613592066145 2006 56.34519061191207 2007 57.2465511969085 2008 56.27779509232786 2009 60.420230585810884 2010 59.35851600187829 2011 57.58252175989713 2012 58.0516665580195 2013 58.649500458986445 2014 59.73025971754785 2015 62.38921555221143 2016 63.317079007085596 2017 63.015852885607124 2018 62.339028365937644 2019 62.49533183758867 2020 63.43357000557644 2021 61.93728490170302 2022 60.442520847221914 2023 62.94908927573416