Year	% of GNI
1977	11.343854402838703
1978	4.3170187513269696
1981	1.9986401600409562
1982	5.944823224516828
1983	8.246968943676254
1984	5.926050384736718
1985	3.199501892084736
1986	2.0232909592195765
1987	3.8281669841239307
1988	0.026636765367271997
1989	3.23708419597399
1991	17.596191750915985
1996	11.680149099672223
1998	10.288255192355454
2014	9.30698110036969
2015	4.988803842717143
2018	7.513817851129168
2019	7.294144987299372
2020	0.7817896048396111
2021	2.001221168759007