Year	% of GNI
2008	4.536635251107934
2009	4.606059913291751
2010	4.03583421786051
2011	3.6412824401213912
2012	3.241765094956018
2013	2.943997107164655
2014	2.6086026343059383
2015	2.9243019582791603
2016	3.1836636585006017
2017	3.5056273966638045
2018	3.119914489996862
2019	3.1351114560529365
2020	4.218910283796565
2021	3.646538467728001