Year	% of GNI
1970	14.9937282232822
1971	15.8764350607164
1972	16.8152513749095
1973	15.5124490522892
1974	17.497035151201
1975	17.4688076000474
1976	17.188441011649
1977	15.9723879777888
1978	15.2730737291018
1979	15.1712671249564
1980	15.7724225782498
1981	12.8805251132663
1982	12.5512938072629
1983	13.0082890721428
1984	11.9160313718756
1985	10.6854647791114
1986	11.1577976761628
1987	12.4028738235582
1988	11.8053856460484
1989	10.9524259447148
1990	10.9125544321162
1991	11.0308085654479
1992	11.2627108560161
1993	11.4114274678379
1994	9.24147495210222
1995	8.99993694005319
1996	10.7043958861306
1997	9.71280213179693
1998	8.94163150368586
1999	8.75117474593454
2000	8.49816883167411
2001	8.16827462462914
2002	8.03839176050107
2003	8.17205482408409
2004	7.70655969696152
2005	7.28769907913468
2006	6.96960346717611
2007	6.88152070271417
2008	7.40000455851484
2009	7.86623643609811
2010	9.0478674072517
2011	10.8909358181921
2012	11.1847328813955
2013	16.7564304428543
2014	18.4087004817942
2015	17.6195882014834
2016	17.3190669214319
2017	17.0615735378939
2018	18.3082213869455
2019	18.4995537058644
2020	19.5569114170483
2021	20.060208797236