Year	% of GNI
2005	5.91533776433809
2006	6.33182659604128
2007	10.1989498013623
2008	9.64195628601574
2009	11.6366972082284
2010	16.3265497365752
2011	18.2315616992441
2012	18.531750709899
2013	14.7904312402165
2014	13.9970422796586
2015	12.4254039752804
2016	14.0778151215646
2017	15.3463650862792
2018	17.6662375534792
2019	17.8040627152272