Year	% of GDP
2006	23.343864526652684
2007	23.833664421484038
2008	29.51228079930085
2009	33.06095695782453
2010	35.35056171531865
2011	36.62422780454292
2012	32.913692270102885
2013	32.682016899422486
2014	34.20959678951828
2015	33.92805265497656
2016	37.22281865827079
2017	36.86126129729567
2018	36.607493885412836
2019	34.959214314258745
2020	37.50818873662987