Year	% of GNI
1970	12.501732872524425
1971	12.620841502860625
1972	12.711832851879011
1973	12.6664247763837
1974	12.956345627657244
1975	13.451909229509416
1976	13.307114509961778
1977	13.439387230598335
1978	13.541151503020512
1979	13.677248492286038
1980	14.174174625586932
1981	14.50201762801641
1982	15.005646151820415
1983	14.916213776270354
1984	14.639111818110695
1985	14.734355884269467
1986	15.10816638318763
1987	15.180690684823903
1988	15.107872831076877
1989	15.131076424056642
1990	16.120156991713564
1991	16.275756408113626
1992	16.166774930509494
1993	16.431528876246936
1994	16.260625880853507
1995	16.257790148732415
1996	15.74856692614825
1997	15.597171512964193
1998	15.633475603888566
1999	15.758674445758311
2000	15.681801493677584
2001	15.834131421228093
2002	15.896175228912865
2003	15.849007042335979
2004	15.662764935627969
2005	15.575086935478017
2006	15.45804863149965
2007	15.482812711281895
2008	15.969550311784412
2009	16.957792178284947
2010	16.527752722108996
2011	16.615362407656526
2012	16.853870640359908
2013	17.002920343421223
2014	17.154191721737796
2015	17.37001305583236
2016	17.42241353819153
2017	17.300954861903616
2018	17.54034099207536
2019	17.783221669917662
2020	18.88975081252874
2021	18.750477936116347