Year	% of GDP
2011	22.90589143466142
2012	25.025920498438143
2013	21.70030229049215
2014	20.906078501582208
2015	19.64547187453329
2016	19.728780272749464
2017	17.459129896717073
2018	21.295953758362344
2019	20.156171078940606
2020	21.378885417509544