Year	% of GNI
1971	22.65573305806347
1972	22.778076277344802
1973	23.967213886813028
1974	23.092751363311656
1975	21.822605505646898
1976	22.29821172364268
1977	22.47484581924294
1978	23.213401385409348
1979	23.265900685639405
1980	22.196623870758074
1981	22.08148739170927
1982	21.045631357801447
1983	20.452719224209428
1984	21.81620269866706
1985	21.137936370856387
1986	20.617601400232953
1987	20.86233512486606
1988	21.683890511814475
1989	21.577873894816147
1990	21.13996082690864
1991	20.56226017594771
1992	19.65035972752687
1993	19.35798881135839
1994	20.108287699265457
1995	21.32078486381784
1996	23.81195374688591
1997	24.041126781011325
1998	23.90844031461264
1999	23.40123445499346
2000	23.490133410555405
2001	22.439208476499086
2002	21.58627383786678
2003	21.293186525172565
2004	21.900754054460478
2005	22.11213427110883
2006	22.690810813207623
2007	22.40628244863239
2008	21.15989266933333
2009	19.25024205220079
2010	20.289933409719595
2011	20.923560743834265
2012	21.34556510530341
2013	21.469803576671843
2014	22.06671332997256
2015	22.379977395045824
2016	22.13546902006071
2017	22.74036703060167
2018	22.85911624932082
2019	22.932276683717188
2020	22.551187949113682
2021	22.795268166599204