Year	% of GNI
1977	24.4775378955311
1978	27.7285951472784
1979	30.0295818799151
1980	32.4530750552997
1981	30.4360895616119
1982	28.0815183178607
1983	28.4429525968885
1984	22.6418076995985
1985	20.3836422701932
1986	11.5710234161722
1987	11.3762078289128
1988	7.77335408386995
1989	11.080702280565
1990	18.0998796397889
1991	27.7022304469704
2005	47.9697813214366
2006	50.5819009892629
2007	51.4720555346352
2008	52.0264763471597
2009	40.4322830953073
2010	43.8664974907389
2011	43.3126935375787
2012	42.7893105360612
2013	40.0263095292174
2014	36.6742441775808
2015	28.6021309932719
2016	29.4366653465868
2017	30.6007688818555
2018	32.8618518737715
2019	29.6570637530983
2020	22.3229096750226
2021	29.0090091640112