Year	% of GNI
1974	39.427129900273634
1975	14.76262412402805
1976	21.010567567110055
1977	23.102780285468594
1978	22.276704130883445
1979	28.613586689760186
1980	25.06514362051245
1981	18.389862823888485
1982	14.86589636387389
1983	16.482623968577048
1984	18.356099523158722
1985	23.171395557893558
1986	21.77804941844451
1987	18.44710466451577
1988	14.888042496330502
1989	11.86062701008569
1990	33.67121532162547
1991	32.5387939071179
1992	31.9218708969892
1993	4.20869775741662
1994	30.879759027426466
1995	32.77602949804328
1996	20.939559388935503
1997	21.569620157596383
1998	14.478633041394795
1999	14.705752588447142
2000	23.1732640822724
2001	21.535952103144066
2002	25.07296884711528
2003	26.87485405139682
2004	29.38978563532172
2005	18.983501731981686
2006	13.868633564458841
2007	12.42009200478045
2008	11.676226180665358
2009	10.205231340281811
2010	10.985532719225285
2011	13.3288838916732
2012	11.983010193523274
2013	12.366336465445572
2014	14.825722226086526
2015	16.363430846889706
2016	12.872350997535401
2017	15.313301778269077
2018	16.4599490652191
2019	17.75312282318414
2020	20.92954557248984