Year	% of GDP
1997	62.822928784478904
1998	63.58332828303771
1999	62.57092597902406
2000	61.30066732184333
2001	62.54146880610904
2002	63.01576543934884
2003	62.923612981792274
2004	62.40435898434108
2005	62.033465745339846
2006	62.72319310638832
2007	63.09642128215205
2008	62.73445420750253
2009	66.86904248237485
2010	65.73341912528225
2011	64.79820615164174
2012	65.16324112510638
2013	65.1674412760895
2014	64.9019974464847
2015	67.00099776833487
2016	67.9588532993538
2017	67.11667206224678
2018	66.86584615274512
2019	67.6711634824727
2020	69.55977998005878