Year	% of GNI
1990	9.52082451692239
1991	18.8570885346522
2005	27.3192961407034
2006	29.1201860381366
2007	32.1956431772551
2008	32.7370429793026
2009	27.2425697538599
2010	30.094980568792
2011	27.7434943191784
2012	28.9013294730809
2013	27.4191009448441
2014	24.6215943642928
2015	20.7297927765948
2016	22.6517451179888
2017	22.2410435246121
2018	20.9413488999051
2019	18.9066363918107
2020	14.2817852879805
2021	15.7754239270383