Year	% of GDP
1990	12.664608997975613
1991	12.48160995328248
1992	14.9651355338768
2014	17.417607224038882
2015	16.933015747198958
2016	18.45967375097986
2017	18.672753224287174
2018	18.68625535960671
2019	19.345948741912135
2020	21.529922906031462