Year	% of GNI
1970	5.21459157225501
1971	6.410849818279319
1972	8.244523021250323
1973	10.672254873085993
1974	24.344279987452026
1975	17.684930354124475
1976	18.206992201143628
1977	17.32878833250101
1978	16.23474483870379
1979	26.448506219471863
1980	23.505584940657812
1981	17.277760526635618
1982	10.017693782760155
1983	8.364824040866802
1984	8.085439583720834
1985	6.931914740302253
1986	3.6294033606652185
1987	5.425181535767377
1988	4.625617134441375
1989	6.659862975926675
1990	7.309015212932771
1991	6.9519543587308
1992	6.733516818447149
1993	7.1826493717994095
1994	7.021438409740307
1995	6.427566922293419
1996	7.290427314446375
1997	6.3220558319080835
1998	4.367506962574731
1999	5.7286037256369875
2000	8.459679125360365
2001	6.730513400548151
2002	6.361871955422268
2003	7.523646217502097
2004	9.050409464670146
2005	11.034729251171308
2006	11.221015385234804
2007	10.159028205530273
2008	11.738297571021974
2009	7.261911679387295
2010	8.315899378036775
2011	10.54853530855882
2012	10.128088015417234
2013	9.54931005415933
2014	8.7124627376508
2015	5.297046424315962
2016	4.57421527859186
2017	5.532866354709583
2018	7.426311103385149
2019	6.316328278708245
2020	3.969205841723926