Year	% of GNI
1977	22.49946486317149
1978	15.090261501859523
1981	8.969500278985759
1982	10.296051183824106
1983	12.04457137412081
1984	9.68314507477854
1985	6.821613072244709
1986	1.1569318390295766
1987	4.991448240235412
1988	0.836561164757871
1989	6.049644746146678
1991	23.50822834760944
1996	17.89277701904878
1998	13.291481079308722
2014	15.036646891783851
2015	8.533696123108145
2018	15.012098656676011
2019	13.746179236929965
2020	5.167167703736627
2021	8.855452140812375