Year	% of GDP
2013	1.9581243497875118
2014	2.7823017387510847
2015	2.7355580760259937
2016	2.8355731468733354
2017	3.1015270960115813
2018	3.3158322715060424
2019	3.702957400409159
2020	4.425157149897751
2021	5.2282010869899445