Year	% of GNI
1974	60.3307603403592
1975	23.4402350215829
1976	31.2413728663949
1977	27.5270818624299
1978	44.4995230085534
1979	30.1820359478143
1980	28.2202948425886
1981	20.7193761474963
1982	16.9502091147596
1983	23.5081684084565
1984	18.7352640156172
1985	13.8784928377692
1986	14.0921478326568
1987	13.2164589849226
1988	13.2210183219413
1989	13.3316743344659
1990	21.3515967777331
1991	14.2785638399955
1992	10.3737104300633
1993	2.8224617272628
1994	15.0389518532849
1995	17.3308833188524
1996	12.1179186728357
1997	5.25891997358541
1998	7.09944084021118
1999	5.41439540929571
2000	13.8100600317891
2001	12.2335115387765
2002	16.3554463631054
2003	17.7457718220163
2004	17.6472293355267
2005	12.824698379891
2006	12.124644900289
2007	11.1589535490013
2008	12.9454368042892
2009	15.9474668575097
2010	15.8662144621834
2011	16.8941606464173
2012	15.6949484625881
2013	16.3352893119187
2014	17.7122926921225
2015	20.5064456291682
2016	14.6247409476974
2017	17.0459288050122
2018	15.468749267707
2019	19.7148253088056
2020	22.3052975169672