Year	% of GNI
1975	3.67395454176845
1976	-2.13585834247125
1977	1.22192508001214
1978	4.58564367549483
1979	17.7567827402601
1980	19.3119569291704
1981	21.4774357314666
1982	22.643221188153
1983	21.7639302057159
1984	20.306243091503
1985	19.2425862623739
1986	19.5249361649491
1987	19.8225065558903
1988	20.5966112656979
1989	19.908150485766
1990	19.979550520292
1991	19.4076200983969
1992	20.1686224548553
1993	21.0976691067953
1994	19.7721619136247
1995	16.2849936718815
1996	17.0091548852542
1997	17.5993148338038
1998	16.8512852922553
1999	17.633028300664
2000	16.4072229161592
2001	18.0663640713204
2002	16.4909640171675
2003	16.7440643263038
2004	16.7005801342916
2005	18.6604993089174
2006	16.888476375066
2007	17.8205542548891
2008	12.2102687873508
2009	18.3390801838948
2015	25.6863332740899
2016	28.26903628058
2017	30.7451223329244
2018	28.6960412715523
2019	25.4999566714774
2020	25.2575775863491