Year	% of GNI
1970	7.18140110797169
1971	9.71369444941248
1972	11.138057576348256
1973	12.941770958853846
1974	32.2397895932936
1975	23.855193899781778
1976	21.88869465570184
1977	19.18976195326819
1978	20.519013492480994
1979	16.619869021983767
1980	13.721496624009985
1981	10.600532275926012
1982	8.619473095047324
1983	7.0448030698644155
1984	6.227671164438414
1985	5.453681247818967
1986	1.4976804998153461
1987	3.3726137090057744
1988	3.3640731957972547
1989	5.845223307422582
1990	7.903655232116683
1993	10.56360935625475
1994	8.907471377172467
1995	7.122958624949594
1996	7.324317979537824
1997	6.518704551483686
1998	4.204256665717919
1999	5.854878640120334
2000	10.402300355358216
2001	7.362872911388479
2002	5.295499379591154
2003	6.084390637614216
2004	7.4240092789498755
2005	9.24184387530281
2006	9.220472097593028
2007	7.901633995568633
2008	9.066341621810153
2009	5.259935849743344
2010	5.6272839754083375
2011	6.064305383514485
2012	4.195685314997997
2013	4.628524066132615
2014	4.660968823314875
2015	2.9293034594501073
2016	3.080610301494031
2017	4.448964561309737
2018	8.16419249000078
2019	5.091100892645527
2020	4.302638514943908
2021	6.69689109182885