Year	% of GDP
2009	3.3809600515463902
2010	3.32685611242383
2011	3.08450500072474
2012	3.9375999781244397
2013	3.51272878104423
2014	3.5360047609601297
2015	3.08379144526184
2016	3.07218792501319
2017	2.87240323946139
2018	2.87620737245072