Year	% of GNI
1977	20.7091183925745
1978	22.360622139363
1979	11.9526338577814
1980	8.51286120455457
1981	10.6464194529772
1982	14.1432265494414
1983	13.3709955303721
1984	13.8952060992212
1985	11.9803683583297
1986	9.30057898006361
1987	14.5268816044665
1988	18.4963484085172
1989	17.1741098333644
1990	16.7510915856171
1991	17.732683913134
1992	5.16292784761188
1993	4.69058760866024
1994	5.67032954595136
1995	7.76833401791311
1996	6.71896471599077
1997	1.27221817692395
1998	13.1164926089884
1999	4.42470441247903
2000	9.72038927270802
2001	10.332241112124
2002	5.53273323038
2003	5.31045632383805
2004	4.64173720382415
2005	2.31914662776677
2006	7.57353677661579
2007	20.130807250344
2008	14.4328587151659
2009	19.6416405117246
2010	18.6936373531392
2011	10.379539721787
2012	2.22345948536299
2013	14.2888632615335
2014	13.1034502147109
2015	8.36036220329291
2016	5.64625860765228
2017	12.1946439449447