Year	% of GNI
1981	41.91162643639602
1982	31.340409543058303
1983	27.573332034477264
1984	25.153100442973788
1986	19.97512425421316
1987	21.128780169340608
1988	20.850237086127116
1989	20.314434142463092
1991	8.169567775776958
2002	24.81944319242657
2003	29.015314847745582
2004	34.112295518401055
2005	41.55403607281587
2006	43.37584132909174
2007	42.267178726734436
2008	45.16884573932674
2009	31.277106145484243
2010	36.28370220536301
2011	41.62958223824319
2012	40.947147876601726
2013	38.26842068641942
2014	34.52646673527283
2015	24.360285094063478
2016	23.911358671056277
2017	27.879759888090533
2018	32.15662997164606
2019	29.89457173073106
2020	20.945444187552656