Year	% of GNI
1970	5.699211392413221
1971	5.952163093252496
1972	6.243759004562496
1973	5.858200054039385
1974	5.817001032722357
1975	6.732955800529486
1976	8.39476811525729
1977	7.282105421349852
1978	8.018996319328032
1979	9.579363819069949
1980	9.616036373909424
1981	8.048405493289074
1982	7.715448392405142
1983	7.861740028925008
1984	6.303170466910199
1985	6.255992395729357
1986	7.116681884371678
1987	11.677840921168771
1988	10.34184785023527
1989	8.883659260893593
1990	9.147923746738645
1991	8.154109713563694
1992	9.406494485301122
1993	11.297753401230864
1994	17.237148416473065
1995	12.919180394849333
1996	11.402735853127433
1997	9.299886448220768
1998	10.925067732201889
1999	9.908130179698531
2000	10.953376308721207
2001	12.752173117025725
2002	10.621016377704343
2003	10.035792372063709
2004	9.471734096325491
2005	11.061948555404395
2006	11.282863875191167
2007	10.739729596338076
2008	10.359213921694568
2009	12.512897113394375
2010	13.466666613068973
2011	13.71084942509699
2012	13.25507814487415
2013	12.228664467966393
2014	9.725681950044951
2015	10.308607505185456
2016	8.231471767260699
2017	9.975608242102425
2018	9.844321302625827
2019	9.71814807777093
2020	14.847204781617352
2021	17.024781404838784