Year	% of GNI
1971	26.046847524634476
1972	24.909985134687457
1973	24.636866672599417
1974	23.480010454660324
1975	19.93967408088454
1976	20.43866076701724
1977	20.180852532319147
1978	21.00048418315927
1979	20.517199296382987
1980	19.296775068696697
1981	17.963632481047096
1982	18.290501197171732
1983	18.79759161968144
1984	19.336468316388235
1985	20.125207706665314
1986	21.675268487026578
1987	20.876361420328042
1988	21.93532911730579
1989	22.90323361581265
1990	24.140929608695977
1991	23.629920947386463
1992	23.439740478757486
1993	22.474292654820758
1994	22.753787957940418
1995	23.06965866426459
1996	22.51830635001502
1997	22.8292753117835
1998	23.359647752700525
1999	22.720580629659086
2000	22.79715590480022
2001	22.700093975761575
2002	22.882339488122827
2003	22.0200640069404
2004	24.17491604132626
2005	23.933358889608634
2006	25.900367420092202
2007	27.86285237924848
2008	26.89338872225545
2009	23.858891125247673
2010	25.269481084971417
2011	27.127912270307526
2012	26.172294796272162
2013	25.980780254451762
2014	27.033283841674518
2015	27.6798544166488
2016	27.911587695354143
2017	28.16787592291875
2018	28.903986624954957
2019	29.00189893132379
2020	28.263402499690145
2021	29.725434785592302
2022	28.091862661905896
2023	29.00943220520586