Year	% of GNI
1971	9.403681937197414
1972	9.452795582556782
1973	10.650589422740943
1974	9.142449150915189
1975	7.39594385113973
1976	8.018842996066375
1977	8.117732038607354
1978	8.920279293885278
1979	8.75905689287388
1980	7.016027070796087
1981	6.474950147158818
1982	5.000394604948939
1983	4.521766129501234
1984	6.3281088487810635
1985	5.468996855293344
1986	4.783486886706767
1987	5.060690234451105
1988	6.006927237921937
1989	5.808902509053498
1990	5.277175278044554
1991	4.410749271984464
1992	3.4148490924694954
1993	2.6281949628205865
1994	3.5362859843866516
1995	4.728097303050259
1996	7.587041329855779
1997	7.992212261129705
1998	7.876090600862366
1999	7.18862165560591
2000	7.266637004959627
2001	6.126149328123798
2002	5.215322112602884
2003	4.994730652862579
2004	5.704784253578385
2005	5.833006892410566
2006	6.400170257100029
2007	5.998531357217782
2008	3.9916785292864354
2009	1.188279179550232
2010	2.839473331762612
2011	3.531458470718203
2012	3.9985842873952926
2013	4.2768814583385115
2014	4.916971161813866
2015	5.264439746374816
2016	4.9451645378660345
2017	5.675244942756102
2018	5.71260173443498
2019	5.590364866811441
2020	4.012181371896929
2021	4.762684375100058