Year	% of GDP
1995	62.9174178915065
1996	62.697396159792284
1997	62.66036027133677
1998	63.56625295108294
1999	64.54517214114365
2000	65.17414281676075
2001	66.52091043354912
2002	66.15701776776353
2003	66.61806919734103
2004	67.44222653235313
2005	66.48390249969212
2006	66.59362472300751
2007	66.18680858277793
2008	66.66633428769573
2009	67.2634634515859
2010	66.84508864104176
2011	67.61493469718596
2012	67.972769776588
2013	67.68819383317518
2014	68.19957285052075
2015	68.45174386297671
2016	69.31049973079662
2017	70.55519711502671
2018	70.48372501528839
2019	70.91960901078089
2020	71.81574649289728
2021	72.44853741063737