Year	% of GNI
1977	18.61931653
1978	22.9390701
1979	20.48924462
1980	22.68649836
1981	19.23622522
1982	23.99869531
1983	29.56266701
1984	26.35399542
1985	26.6937271
1986	22.10875677
1987	20.38897584
1988	24.41545512
1989	18.1212018
1990	24.38542221
1991	22.96677195
1992	26.28047489
1993	30.91913898
1994	31.8147503
1995	11.25191872
1996	11.59425564
1997	11.86552613
1998	11.47391895
1999	11.17116772
2000	9.881756896
2001	6.705811468
2002	5.897079424
2003	9.080881567
2004	8.899647232
2005	15.96697275
2006	15.33647895
2007	9.628036028
2008	11.17325786
2009	23.49647335
2010	21.2949726
2011	19.58240865
2012	22.4061555
2013	22.12139853
2014	15.94607953
2015	19.86446508
2016	8.115581085