Year	% of GNI
1970	4.720210246630913
1971	3.6078285290765533
1972	3.4846716546077556
1973	3.496925352046049
1974	3.1854433831062603
1975	3.327130797021336
1976	5.041272092313516
1977	4.345238330119516
1978	4.893030828435111
1979	4.741916508316523
1980	4.325908460684845
1981	4.664872498171897
1982	4.645999406365599
1983	4.126622020012695
1984	3.9441636459956686
1985	3.7468549516576424
1986	3.741656007254867
1987	4.126559260951256
1988	3.8250312067917673
1989	4.142276595111073
1990	4.112990024705457
1991	3.8708531688299366
1992	4.0158359777976225
1993	4.079009476861808
1994	4.092247239351743
1995	4.0670229957204285
1996	3.8420420379473144
1997	3.776554530213275
1998	4.194968161561578
1999	4.149468294249178
2000	4.133945816546778
2001	4.153357680493924
2002	4.345417637646167
2003	4.345336405374179
2004	4.365986532640828
2005	4.480753632283707
2006	4.375163830775874
2007	4.283998132554404
2008	4.054859576917608
2009	4.126568630240665
2010	4.126542494839669
2011	4.0093437938391014
2012	3.836400154229242
2013	3.9319265072320215
2014	3.8856050328307528
2015	3.8264128073998167
2016	3.9591101884150888
2017	4.031865149793812
2018	4.10368907288145
2019	4.081063532839806
2020	4.1229102559141895
2021	4.14214869896538