Year	% of GNI
1970	5.277842274819532
1971	4.570648829115907
1972	6.515997870214606
1973	7.954385691658763
1974	19.48999573524691
1975	15.784157944737252
1976	17.133645624214253
1977	17.73033170602233
1978	15.586766000519
1979	28.684626753522384
1980	22.546407237804853
1981	18.103640357502172
1982	12.367644455078183
1983	11.737319718328616
1984	11.171486945916811
1985	10.415503249089808
1986	4.459061687511695
1987	6.583415153330959
1988	6.342118053212199
1989	9.697948541780164
1990	12.249515271188766
1991	11.47396211923323
1992	10.770310078951383
1993	9.494666592165602
1994	10.184592608691258
1995	11.90534702137178
1996	13.416707742256953
1997	12.621400077590714
1998	8.59799023065781
1999	11.390915696162631
2000	16.55414195045716
2001	14.026900484689808
2002	14.721990922636556
2003	16.10935716311663
2004	18.01492725492899
2005	22.883928873618473
2006	23.753202254333225
2007	21.75614697211062
2008	22.052236538784282
2009	15.375818317111865
2010	16.208959580062462
2011	18.21643187044912
2012	16.324145337409835
2013	14.888670510730472
2014	14.138262079082772
2015	8.97834070023833
2016	7.741723618615903
2017	9.291077901093495
2018	12.583956381886916
2019	11.050129996164284
2020	7.600867342259372
2021	12.790533310571952