Year	% of GNI
2011	22.8710999596222
2012	19.8598615844601
2013	16.9228222250647
2014	21.7276484719207
2015	19.057538111845
2016	21.1398760007308
2017	21.0908750995034
2018	24.0153644078647
2019	20.7946310772418
2020	19.3819942735561
2021	17.8405372045137