Year	% of GNI
1970	4.083940448387585
1971	4.102347575528403
1972	4.053556535827183
1973	3.9859722175430328
1974	3.8926893858959133
1975	3.9292662585603675
1976	3.7811358360207166
1977	3.8134490687748337
1978	3.8137415698171018
1979	3.8752529055938796
1980	4.040041720233055
1981	4.128313097209671
1982	4.120992144200561
1983	4.200478988037589
1984	4.1488347762699025
1985	4.087504930704344
1986	3.924831312123514
1987	3.7930016734176957
1988	3.78333431229821
1989	3.8654442362824963
1990	3.75701664681805
1991	3.656097331546287
1992	3.8801172488611924
1993	4.354990827570437
1994	4.108005081417179
1995	4.100603928759768
1996	4.240647467842309
1997	4.373319635105549
1998	4.8787602403449295
1999	4.598730606580237
2000	4.539874836129727
2001	4.4341247758340065
2002	4.608587765252405
2003	4.899404637895811
2004	4.853301104030551
2005	4.830489488126102
2006	4.708220789585208
2007	4.62886315455951
2008	4.752167563005418
2009	4.910574392240742
2010	4.843231415699745
2011	4.727185828578498
2012	4.67142326579882
2013	4.661459638909395
2014	4.854374946059695
2015	4.859522099880713
2016	4.958496978872343
2017	4.85070973453423
2018	4.867634108509793
2019	4.78740543928914
2020	4.801054404467234
2021	4.797980873816926