Year	% of GNI
1970	3.7771631973748794
1971	3.8406992244827998
1972	3.880757611150239
1973	3.9164979634727746
1974	3.8827591296884063
1975	3.9408418202573046
1976	3.9330898053558805
1977	3.874688576763237
1978	3.991497502647564
1979	4.076003895474049
1980	4.159411976517511
1981	4.179022190128205
1982	4.09481229771386
1983	4.102824409347268
1984	3.9386521358304853
1985	3.787080996570308
1986	4.1595055678058666
1987	4.213708627901486
1988	4.247153942228067
1989	4.098685565817209
1990	4.171005755422652
1991	4.521178371076647
1992	5.318911236101402
1993	5.1203683723089295
1994	5.2301922796795415
1995	5.849691818852849
1996	5.398647333580731
1997	5.989996959789427
1998	4.522598480984298
1999	4.406397599630369
2000	4.000190675842326
2001	3.9959825581981145
2002	3.989259576159593
2003	4.110537550495309
2004	4.25149848050429
2005	4.195569896223881
2006	4.089349900353251
2007	3.972066331051015
2008	3.088066124300883
2009	3.3519387261792275
2010	3.4737983966789177
2011	3.666955361585768
2012	3.649500503192647
2013	3.3924932506901473
2014	3.2704953263871097
2015	3.1727582424601515
2016	3.1964198647930364
2017	3.392955834197174
2018	3.360869093344478
2019	3.3381957657078525
2020	3.369453666893862
2021	3.587827003296989