Year	% of GNI
1977	11.343854402838696
1978	4.317018751326971
1981	1.9986401600409527
1982	5.944823224516826
1983	8.246968943676247
1984	5.926050384736722
1985	3.1995018920847342
1986	2.023290959219573
1987	3.8281669841239334
1988	0.02663676536727287
1989	3.23708419597399
1991	17.596191750916
1996	12.025726422066985
1998	10.458993843029395
2014	9.47556638343531
2015	5.043098909385891
2018	7.598974496777659
2019	7.322478540066387
2020	0.7500697079204794
2021	1.9045633251589198