Year	% of GNI
1977	21.4390426126747
1978	25.5502477167774
1979	23.9859768778645
1980	22.8537927105762
1981	23.9193815331464
1982	23.5779007704723
1983	29.8440304275162
1984	29.4351636811643
1985	24.9539525684262
1986	22.3224786348036
1987	26.3301582667921
1988	27.5298666831411
1989	26.6999135008274
1990	32.5203142794297
1991	34.7021708448008
1992	35.295761753079
1993	31.4746101862507
1994	23.8276408505895
1995	22.1233360395207
1996	18.6314945973769
1997	17.6221125115503
1998	18.7699538320562
1999	18.7892573898933
2000	17.5020068690136
2001	18.4066804224986
2002	18.3872995785607
2003	18.6730277667024
2004	21.1677566698342
2005	21.9043376389331
2006	22.863785956869
2007	23.3446487905649
2008	23.4278540565231
2009	16.8261780845755
2010	18.3154455095606
2011	17.3125176566451
2012	13.1842699909697
2013	14.0438387735576
2014	12.1742918108298
2015	9.76243963146822
2016	9.84243286985033
2017	10.5599646930451
2018	14.2529231997226
2019	15.7556034612628
2020	11.4795331633075
2021	7.93672882697374