Year	% of GNI
1970	14.7832566221939
1971	14.4569870055667
1972	15.478689505840498
1973	15.0630218477294
1974	15.1750669446878
1975	15.069639807408702
1976	14.802143274183399
1977	14.8015674767791
1978	14.8771292634983
1979	14.9128350685604
1980	14.672700585813748
1981	14.694270831326952
1982	14.727666521935966
1983	14.787826278419173
1984	14.76915244423786
1985	14.796345429664457
1986	14.834818108057672
1987	15.935680860814788
1990	37.003879151923876
1991	36.89116721252692
1992	34.4621747080348
1993	32.4789786383811
1994	32.241004610059804
1995	30.107105472678303
1996	24.431524444155038
1997	22.688523797615943
1998	19.986464454474355
1999	16.972216457413275
2000	15.864356330392178
2001	16.356329074221442
2002	16.401717851134393
2003	15.889153779374778
2004	14.843054838853934
2005	14.080346369191147
2006	13.119915709343351
2007	12.662416377437552
2008	12.317451171787766
2009	13.581406630879286
2010	12.675465142291669
2011	11.874920390631756
2012	12.150906239266403
2013	12.585181779762747
2014	13.050525629239699
2015	13.631590397248967
2016	14.123588610966982
2017	13.966478078445162
2018	13.242390013074917
2019	13.805745767403055
2020	14.069736156853685
2021	14.0993833235844