Year	% of GNI
1970	9.029281916367127
1971	8.892880587016847
1972	9.174128438642821
1973	9.014402844058406
1974	8.919452981995645
1975	9.421071184499766
1976	9.678575459469545
1977	9.833725522429843
1978	10.089210628143585
1979	10.327904395334032
1980	10.897442050466754
1981	10.913169574023067
1982	11.35290209985697
1983	11.373491904171926
1984	11.301782663550652
1985	11.461322759077225
1986	12.100446568351876
1987	11.92178988316191
1988	11.674863307600301
1989	11.859263925488015
1990	17.976247631826116
1991	17.26636250658326
1992	16.097141653961305
1993	15.534434957526933
1994	14.771468920382079
1995	14.677797039992342
1996	13.389414567714436
1997	13.391575236206982
1998	13.566648255002715
1999	13.129933821116245
2000	12.831138946902453
2001	13.36814282357622
2002	13.446812130850091
2003	13.531859739878074
2004	13.357841323501805
2005	13.183219811503674
2006	13.051939026624908
2007	13.045597326743529
2008	13.363781940664369
2009	14.606955992207062
2010	14.782965835632796
2011	15.363265122750693
2012	16.16904786204282
2013	16.811434068514846
2014	17.3007778703782
2015	17.809004642563494
2016	17.88717841662433
2017	17.733084919124565
2018	18.407555365348564
2019	18.75109139426715
2020	19.797069163841197
2021	19.873577423992096