Year	% of GNI
1970	4.720210246630913
1971	3.607828529076553
1972	3.4846716546077543
1973	3.496925352046049
1974	3.1854433831062594
1975	3.327130797021336
1976	5.041272092313515
1977	4.345238330119515
1978	4.893030828435111
1979	4.741916508316523
1980	4.325908460684844
1981	4.664872498171896
1982	4.645999406365598
1983	4.126622020012695
1984	3.9441636459956695
1985	3.7468549516576424
1986	3.741656007254867
1987	4.1265592609512565
1988	3.825031206791768
1989	4.142276595111073
1990	4.112990024705455
1991	3.870853168829938
1992	4.015835977797623
1993	4.079009476861808
1994	4.09005650481029
1995	4.064445942300253
1996	3.8373567813621974
1997	3.7708504133667744
1998	4.193753442663022
1999	4.147759480593469
2000	4.132242199870545
2001	4.15203454826405
2002	4.345821192470687
2003	4.345746725766024
2004	4.366550852932213
2005	4.482209445231535
2006	4.375716963002158
2007	4.283915834236601
2008	4.053315094175944
2009	4.125352703999165
2010	4.1252823419357805
2011	4.007230419600993
2012	3.8329760186816912
2013	3.928607045608049
2014	3.883010893057153
2015	3.824417328252701
2016	3.9560393074831683
2017	4.03129082730954
2018	4.104040057402953
2019	4.081107044510865
2020	4.123546809972588
2021	4.1430934417575696