Year	% of GDP
2001	22.3040618101545
2002	19.8738834951456
2003	20.6800668449198
2004	16.9247603121516
2005	17.5230031612223
2006	18.8478462913315
2007	17.2018281136198
2008	16.6934356894554
2009	16.5307409502262
2010	17.0025775775776
2011	14.701530442035
2012	15.0463836824697
2013	14.7872579067493
2014	14.4962022900763
2015	11.3400188857413
2016	12.2546681855596
2017	11.1240939230639
2018	8.86708012721862