Year	% of GNI
1970	16.848086403143707
1971	19.202648079283755
1972	23.933035030271306
1973	24.290802948089397
1974	26.5440060870225
1975	16.55912975984583
1976	17.061668088222277
1977	14.379087876990301
1978	14.912280724927614
1980	13.31939396003377
1981	5.674272966334339
1982	3.0179865950156115
1983	5.139295265261628
1984	4.330901363326669
1985	2.8312654474696393
1986	2.2302185590094346
1987	1.8952471864445137
1988	2.411263350710844
1989	3.22073648109832
1990	2.332595027315508
1991	0.2559968287214508
1992	2.3698182393731053
1993	6.403562626045396
1994	6.537329423225571
1995	6.184956872703874
1996	7.077415362783491
1997	6.650748649813577
1998	4.806375156075375
1999	5.525477492570601
2000	8.882463916277551
2001	7.607805088194415
2002	6.4494814520739325
2003	7.805611701713346
2004	9.236204915356852
2005	11.26363297642122
2006	10.631296704914194
2007	9.993609057279855
2008	11.745024600825984
2009	7.78580880625267
2010	9.492561165910798
2011	13.062549686979326
2012	14.177302594357908
2013	13.491120634534317
2014	12.535504783426585
2015	8.500977643335256
2016	7.564400262373143
2017	7.901319784464212
2018	10.056285651960202
2019	8.71641775407094