Year % of GDP 1994 52.88573136848028 1995 51.12708663336176 1996 49.63045518535898 1997 52.54002872493218 1998 51.81179015684153 1999 50.58765686458139 2000 54.95873516320475 2001 56.877388415715465 2002 63.493447325496376 2003 59.987399193548384 2004 57.4199995655102 2005 57.317049378621455 2006 58.255894396350236 2007 60.515501143456504 2008 57.466075727730356 2009 57.83420112049667 2010 57.69870371326758 2011 60.21759147513431 2012 59.97755643655188 2013 60.76874699419186 2014 61.42733582564315 2015 61.6830322636054 2016 60.95654770405182 2017 58.996155753968246 2018 59.97751373136896 2019 61.10952228091166 2020 60.551645988526694 2021 60.07510077861836 2022 58.33085492160392