Year	% of GNI
1975	23.910185527474827
1976	23.290825051345575
1977	28.16855848804534
1978	28.838943015575218
1979	29.35636931800023
1980	35.50489704837017
1981	33.914466297220926
1982	34.561798147038495
1983	34.555657888924536
1984	33.46279843898564
1985	35.35823583658408
1986	29.048762623422068
1987	27.208750614764345
1988	32.069160675241946
1989	31.81846221194834
1990	15.637658034974848
1991	14.01884071979849
1992	14.726099056359205
1993	13.467641426791069
1994	15.471604575030701
1995	9.31919365636085
1996	10.927865231125216
1997	10.028531712097417
1998	12.732297800671827
1999	11.60719715260647
2000	10.993854048948336
2001	8.80937204998472
2002	9.900850948938091
2003	12.362764871323828
2004	8.410232199578594
2005	4.016313939205282
2006	8.607412573083662
2007	14.024485880393811
2008	8.486894210538864
2009	7.454794622489683
2010	6.670956052611511
2011	2.0818110836148365
2012	4.425082464211775
2013	5.235361236984153
2014	4.557213937153841
2015	5.128625451374684
2016	2.77683758742728
2017	5.190581219276559