Year	% of GDP
2008	3.0188838725427596
2009	5.024588091918086
2010	3.675026967559472
2011	3.6335421844131166
2012	3.677191144319473
2013	3.3425148066592323
2014	2.9835818694383445
2015	3.068003764659507
2016	3.553427523869259
2017	3.365077395630232
2018	3.440776249610966