Year	% of GNI
1970	3.486412474106822
1971	3.524530599327909
1972	3.8552823133194005
1973	3.6306550619860456
1974	3.502640084639289
1975	3.5963954461252943
1976	3.6137660979357094
1977	3.5009221569611904
1978	3.4520787165389315
1979	3.4856546792745844
1980	3.3905870239891898
1981	3.8281752214592744
1982	4.010156107944793
1983	3.2559347398249603
1984	3.300816718314294
1985	3.162581812574067
1986	3.151375681427001
1987	3.195783890163562
1988	2.936099080522054
1989	3.654179737640696
1990	3.310552573681742
1991	3.3591247713631183
1992	3.659531252987775
1993	3.548655167935784
1994	3.934159138438804
1995	3.83294242665103
1996	4.071301037486195
1997	4.138316110203869
1998	4.059712651974632
1999	3.884742167909802
2000	4.084952389455888
2001	4.211316257795001
2002	4.229396328146176
2003	4.41576289480855
2004	4.225669327993728
2005	4.392389180152207
2006	4.436055869948552
2007	4.510060463951401
2008	4.81203472224188
2009	5.193394271663897
2010	5.1340933440614425
2011	5.146434818253008
2012	5.196146541635092
2013	5.148776821422178
2014	5.314108568459074
2015	5.386115563385288
2016	5.357363085860279
2017	5.319711076973907
2018	5.147226348342817
2019	5.119002505662239
2020	4.993283943211697
2021	4.9532385449315495