Year	% of GNI
1970	8.74026456600132
1971	9.12358291668001
1972	9.34492434617882
1973	9.00873225474823
1974	8.84303759928717
1975	7.82152303341685
1976	6.79145673289849
1977	7.86946016906164
1978	8.20559688441167
1979	9.10737997877726
1980	10.1409262328355
1981	12.169511199243
1982	9.35458617536175
1983	11.3512884084508
1984	9.9411398808784
1985	9.40708864860127
1986	8.36517311408973
1987	8.79198612592645
1988	9.55767272371782
1989	10.2669578449652
1990	10.7647507702204
1991	10.4250039628501
1992	11.0845181001458
1993	11.5374862462639
1994	11.7833325737581
1995	11.9855523918891
1996	12.4189804185728
1997	12.9887499922418
1998	13.3521138785337
1999	13.2925946321054
2000	13.2107395684437
2001	13.307396198532
2002	14.2193026298659
2003	14.3791726642404
2004	13.3827626470667
2005	13.244248263309
2006	14.0765076291269
2007	14.2672202260262
2008	15.3223228973906
2009	15.9413844721034
2010	16.5453061846676
2011	18.8181629606503
2012	19.2317963067504
2013	18.8078610655003
2014	18.4906244832905
2015	18.6011466178045
2016	18.9692915411156
2017	18.303081147219
2018	16.8406211833969
2019	17.1877346360773
2020	16.5795164732
2021	16.1697395928756