Year	% of GNI
1970	5.553525844460363
1971	5.242435803010166
1972	5.15626853874702
1973	4.981527587985758
1974	4.959577297094052
1975	5.254411388863352
1976	5.325768949249214
1977	5.188029774393827
1978	5.061105265437294
1979	4.904607351182822
1980	4.906792329445724
1981	5.093369117776219
1982	5.09635348126403
1983	5.1462148100015215
1984	5.366812227480126
1985	5.18973790383916
1986	4.300902507725085
1987	5.082140368515452
1988	4.2932818290619705
1989	4.20445555084365
1990	4.2136462410214115
1991	4.275896969987749
1992	4.590962487258311
1993	4.579590835291771
1994	4.735996894905844
1995	4.488586617179831
1996	4.501097413528678
1997	4.562669507409957
1998	4.119356154378171
1999	4.085732225389617
2000	4.15882462809915
2001	4.3055789154475335
2002	4.369461136749282
2003	4.483726413854976
2004	4.376108587617509
2005	4.293715929202876
2006	4.388615825569873
2007	4.364281141921778
2008	4.4346383889377075
2009	4.550547660770167
2010	4.631458454070493
2011	4.649811327489113
2012	4.499990663497785
2013	4.912086007052008
2014	4.871099436220046
2015	4.45444867104235
2016	4.370450219448493
2017	4.427738109936532
2018	4.346117453391051
2019	4.36378294116834
2020	4.348361130990978
2021	4.376078206272794