Year	% of GNI
2008	3.74726482705054
2009	4.55358863336495
2010	4.58608770373303
2011	3.94841518957112
2012	3.96249242370555
2013	3.88560522902805
2014	3.4516805511206
2015	4.68486361896818
2016	4.83122112124034
2017	4.16364998820138
2018	4.03934982352925
2019	4.34518019089588
2020	4.65249026879713
2021	4.19021680239907