Year	% of GNI
1977	8.33682034406221
1978	6.89050675237053
1979	5.15073431758986
1980	4.07120155857257
1981	5.16785320684929
1982	4.05309085884803
1983	5.07836644741592
1984	-0.560898049883157
1985	4.72960275175737
1986	11.3507371004683
1987	9.45642810886291
1988	9.4332011134755
1989	7.04240377598003
1990	2.24225943075967
1991	-1.01011592984371
1992	4.33446573365898
1993	3.39679025369288
1994	6.21598091897471
1995	3.35838931880093
1996	0.756818487847557
1997	7.32324790573963
1998	8.78108445444579
1999	6.91050998306571
2000	18.9913636289205
2001	24.1224228831762
2002	23.7095624980344
2003	25.1288395131903
2004	27.5615814872552
2005	22.7073405280009
2006	22.4249457008213
2007	25.1092032305436
2008	26.6983172935956
2009	26.7422748457899
2010	19.5448580862098
2011	19.4901888644882
2012	17.5600601433664
2013	21.3237985173957
2014	35.6077235461673
2015	36.7169111879348
2016	35.0903600092016
2017	37.6742525993611
2018	34.105004920478
2019	37.4304500091205
2020	32.366240903199
2021	6.98515211969437