Year	% of GDP
2008	19.38430448915231
2009	18.440204720657686
2010	17.773821153192834
2011	17.063404126736188
2012	16.422394732147893
2013	16.539364134716976
2014	15.904088003972582
2015	17.402906307603683
2016	17.43604480803124
2017	17.685084462801896
2018	17.964723644067753
2019	18.67332071959618
2020	17.23024000645966