Year	% of GNI
1974	25.0491684373836
1975	20.956113823052
1976	29.2240965016911
1977	28.3672406897399
1978	28.8868652556627
1979	34.9077869179988
1980	30.4125315613417
1981	26.1573332310709
1982	25.0812256922176
1983	28.1268460921451
1984	30.7230878051139
1985	27.5881711152429
1986	27.4521798957338
1987	33.0810430901193
1988	33.4990759971772
1989	32.5037695183885
1990	31.7321123612704
1991	30.8297424991709
1992	33.4750641361449
1993	36.4635702487668
1994	36.8666495817887
1995	35.5516827702671
1996	38.8475096207069
1997	39.116023892438
1998	42.1277581293744
1999	41.1645788522142
2000	39.0879471864962
2001	34.7792975201556
2002	35.0256594965266
2003	36.8350108017525
2004	37.0443860281199
2005	38.512091877277
2006	39.954278345207
2007	39.5991687630279
2008	39.7055730971204
2009	34.0422284029582
2010	34.5660535920084
2011	34.908835585986
2012	32.0999301044006
2013	30.4349777121668
2014	30.3718770457207
2015	29.1957762263727
2016	29.1930782083813
2017	29.15741493364
2018	26.9680736130733
2019	25.2041775412835
2020	24.3533283126655
2021	26.78839511134