Year	% of GDP
2008	15.6349638124866
2009	18.8664531280369
2010	23.1822093203965
2011	29.1875975591087
2012	29.8802036939277
2013	31.5157197972696
2014	31.7196750455138
2015	34.5905104475229
2016	33.1797335526042
2017	32.7555783491497