Year	% of GNI
1970	12.6515761507991
1971	13.0425225378726
1972	13.2357426515625
1973	13.1648636197471
1974	13.7064333221491
1975	14.1977292407006
1976	13.9798273413312
1977	14.0040690116622
1978	14.1338266274978
1979	14.3075714215223
1980	14.8837179129774
1981	15.4791583490981
1982	15.8753063930518
1983	15.9202131245539
1984	15.9641207514689
1985	15.9306034938683
1986	15.7683436679836
1987	15.9461050029513
1988	15.7410098430902
1989	15.6267259052361
1990	15.5449402171937
1991	15.5827379351675
1992	15.8010879672139
1993	16.3632532960416
1994	16.3248409013752
1995	16.3470604923033
1996	16.5023812764981
1997	16.6170005722768
1998	16.6324744911735
1999	16.7054234429792
2000	16.9840064959972
2001	17.0449362120719
2002	17.2746839824285
2003	17.3440664805866
2004	16.9885866108697
2005	17.0394195952972
2006	16.6156033220532
2007	16.691556466326
2008	17.1524488790995
2009	18.0735614804704
2010	17.6625099390712
2011	17.3079798070463
2012	17.6197895531225
2013	17.7247015339725
2014	17.5765434484687
2015	17.5357972168741
2016	17.3910756262721
2017	17.3797049644473
2018	17.5300597044455
2019	17.8367626725893
2020	18.8739072450736
2021	18.9014982738863