Year	% of GNI
2008	18.3559628374936
2009	16.9380468408856
2010	33.1626993084607
2011	37.6075056084223
2012	34.9729949322034
2013	33.5136211726151
2014	31.8372421575629
2015	32.4105259241137
2016	31.7406700058761
2017	30.0779753536191