Year	% of GDP
2005	18.99498599049532
2006	16.527836227614678
2007	11.110553995056245
2008	11.130342040137327
2009	13.251806802941605
2010	3.774507640078838
2011	10.8251611657276
2012	10.555893536276782
2013	12.67728672821828
2014	13.294256737416799
2015	15.044428941856308
2016	15.579330587145046
2017	10.343673682796316
2018	12.292203566004945