Year	% of GNI
2011	32.8834043114291
2012	33.4953580800334
2013	32.4914482191615
2014	31.8473573116836
2015	23.109068776611
2016	20.7612748237686
2017	23.1821978437713
2018	25.4830638892714
2019	21.3387878093527
2020	17.9278556351708
2021	25.4746017385884