Year	% of GNI
1975	8.481929121760981
1976	3.417560340793935
1977	5.977145195513953
1978	12.186266724732956
1979	22.717625566028055
1980	25.467023775938245
1981	26.921136300196682
1982	27.994613432481692
1983	26.829402354486888
1984	24.85486729145438
1985	23.803378466211967
1986	23.783478508226366
1987	24.26766204153446
1988	24.765021001541978
1989	23.75309886361161
1990	23.875896765074284
1991	23.809833926851272
1992	24.509592526967868
1993	25.615215900745348
1994	24.529904623235822
1995	21.10725974144699
1996	21.90944602713649
1997	22.462221448670633
1998	23.01085675897505
1999	23.817553117124795
2000	22.533868754131312
2001	23.372217811903802
2002	21.640176879298416
2003	21.85443723548991
2004	22.340416562606123
2005	24.462293409963046
2006	23.003314449399916
2007	23.88728639763744
2008	18.473025261180076
2009	24.209228678901006
2015	32.82318939539632
2016	35.34867384411332
2017	38.2230876725432
2018	36.03830607486329
2019	32.947633870869346
2020	32.22709902720927
2021	33.75895218786977
2022	27.86329516857488
2023	28.14000777252634