Year	% of GDP
1997	25.62250978275645
1998	21.125465559822267
2008	30.619958599987836
2009	34.98557217834224
2010	30.538939911787296
2011	27.418454951950686
2012	27.521041915405767
2013	27.15344923791245
2014	27.859849794967563
2015	27.22134899306234
2016	28.144214378632974
2017	29.06051703708522
2018	29.317006056807234
2019	30.83815738642951
2020	31.401781764150442
2021	29.007199011414272
2022	32.184665167854206