Year	% of GNI
1978	42.633196723340426
1979	43.35212260541601
1980	53.08579845973312
1981	53.37359433264362
1982	51.071823202778475
1983	45.59708449887311
1984	46.613865458806174
1985	40.04672561083969
1986	16.48678312764875
1987	13.688820812557756
1988	23.081933261645926
1989	23.6154517380386
1990	27.051414412132576
1991	32.0666358925976
1992	22.21818288581265
1993	20.416600352191594
1994	33.0703334851437
1995	37.74778706354551
1996	41.06237011006589
1997	47.88862062321339
1998	28.52268372820224
1999	36.80149676674474
2000	49.220338976459686
2001	38.69033903363657
2002	38.19042735586999
2003	36.76353244100183
2004	37.94984066534936
2005	49.58496873824179
2007	46.96495780878289
2008	51.55887624463369
2009	38.90097597708433
2010	47.38332136161277
2011	50.72199175097552
2012	48.75578738810239
2013	44.62990556288092
2014	44.71450123552984
2015	41.85356190237717