Year	% of GNI
1978	22.7964107785396
1979	23.7112921413641
1980	41.6630539147142
1981	42.670362265994
1982	39.360830412888
1983	34.9576027678697
1984	33.4518131902822
1985	28.3579562197622
1986	-7.12862551079404
1987	-9.39015977597862
1988	7.83827171706774
1989	5.61069192227956
1990	8.17634884767805
1991	13.2106433984934
1992	2.75746618151066
1993	0.55274119438909
1994	14.6759271354994
1995	18.1663470313376
1996	21.5973646461847
1997	28.1613321885626
1998	8.33112360026453
1999	17.3798368568256
2000	29.9466968481107
2001	19.5250420260149
2002	19.4984576899261
2003	17.9108179796063
2004	18.235613923462
2005	31.7958959787481
2007	28.2454423764505
2008	33.2746890607398
2009	20.6058429256823
2010	28.2762346994911
2011	31.4352169968464
2012	30.0302179472957
2013	25.7107400117864
2014	26.5838459601654
2015	22.5292102848988