Year	% of GDP
2003	28.32868047982552
2004	28.61808680505153
2005	27.97996883021338
2006	26.333594167096596
2007	27.047665120015203
2008	27.293528055550315
2009	27.941329131199144
2010	26.545902856984398
2011	27.693662275205593
2012	25.888322509615403
2013	24.64518687916041
2014	24.828819276313716
2015	26.580805670103818
2016	29.527364659414996