Year	% of GDP
2005	21.076799897894656
2006	22.74176634142635
2007	19.175765528895024
2008	19.41944637210533
2009	16.883593640579324
2010	16.822432848252248
2011	17.987083017097195
2012	16.28108272684179
2013	16.270355462072462
2014	15.532558902001714
2015	17.135596778932907
2016	16.725278132439673
2017	17.803638365854976
2018	18.931606338825443
2019	18.22403323721272
2020	18.38570329343108