Year	% of GDP
2008	40.1401627607721
2009	44.7903965809027
2010	42.1683485047429
2011	40.0148267521246
2012	41.744653941564
2013	42.7272671135814
2014	43.1038440081682
2015	48.4030966798281
2016	47.0922805659354
2017	44.3632860298843
2018	42.8317193530962