Year	% of GNI
1970	3.782501945989024
1971	3.712246948522765
1972	3.6051409883024266
1973	3.6561983598419547
1974	3.341830557302398
1975	3.1202207533767967
1976	3.2293075150597406
1977	3.1539331857846804
1978	3.3107908780396342
1979	3.500083303582407
1980	2.94946166661256
1981	2.989519535504659
1982	3.337109125490789
1983	3.8971533803883145
1984	4.030125086829505
1985	4.326007588222111
1986	4.069030139922957
1987	4.232619703641976
1988	4.150901983115023
1989	4.2736784731123585
1990	4.259186402681352
1991	3.8933653389448177
1992	4.280616257669286
1993	4.468953766164855
1994	4.494322457962009
1995	4.3079100209774275
1996	4.051533028161002
1997	3.901989370125484
1998	4.689109187875158
1999	4.684040217183755
2000	4.668005142009881
2001	4.657505300421677
2002	4.710698003517844
2003	4.740206241120021
2004	4.673487455455911
2005	4.70370967590973
2006	4.499149046704701
2007	4.445985781368275
2008	4.446186720970022
2009	4.4812032293601565
2010	4.504869588850673
2011	4.592405378464591
2012	4.604139325978498
2013	4.623083188981346
2014	4.6412284849937135
2015	4.637333408616129
2016	4.648391925505301
2017	4.679102812415974
2018	4.7416132988715365
2019	4.75026756305578
2020	4.798625806676806
2021	4.835598333738223