Year	% of GNI
1970	5.827565559735384
1971	6.805255466398918
1972	7.15275206687276
1973	6.670963251921037
1974	7.283020097113639
1975	7.979830269955583
1976	10.00379233306791
1977	10.96303485229653
1978	10.923080779210837
1979	10.715654383060059
1980	10.837626935631814
1981	13.945889943425813
1982	16.178291780126443
1983	17.53665280560217
1984	18.321779224557996
1985	21.69328680252699
1986	25.81744435271701
1987	29.34280737379738
1988	25.814337223599942
1989	27.261405735163663
1990	33.55382710420182
1991	35.333270864462364
1992	33.861570113396624
1993	30.596422598459306
1994	35.75411717695166
1995	34.779120382099634
1996	32.61648123300287
1997	33.05612637607147
1998	36.618162373559755
1999	33.47294098018752
2000	28.178580741299193
2001	27.162423757331066
2002	24.25502870612026
2003	22.69914903999987
2004	21.29601716630519
2005	19.837015161691927
2006	17.43674161916372
2007	15.262478004432142
2008	12.458759003215288
2009	13.249934137622901
2010	15.711899741444837
2011	16.84400840368802
2012	16.7670632704048
2013	18.379516315975195
2014	19.646834866422807
2015	15.543095158258167
2016	16.036272714775244
2017	17.228530421365498
2018	17.360338457859562
2019	17.91205924263072
2020	19.284035592118176
2021	18.154701881955535
2022	16.310601476994144