Year	% of GNI
1970	7.98161025576447
1971	10.792670908196065
1972	16.787429595739376
1973	23.621637609842658
1974	33.24962185631037
1975	21.94421548756148
1976	23.337146074421593
1977	23.53925337868226
1978	19.249093138731364
1979	41.70816642025145
1980	34.17074054564297
1981	26.83371274557754
1982	12.980754685492064
1983	9.585189119802807
1984	8.59894632368468
1985	5.017682412707118
1986	5.816362434503107
1987	5.90093837270478
1988	4.561996441368721
1989	5.8659984074285285
1990	10.642248578118535
1991	8.259022792358417
1992	8.709406510717702
1993	8.245316373113727
1994	7.56110231700746
1995	8.170365333984586
1996	10.270049923312824
1997	9.073160421715727
1998	6.744685088024821
1999	7.808799779282182
2000	12.736592776230006
2001	9.844868295596221
2002	8.86185450704428
2003	11.785051862414745
2004	13.92410461058096
2005	15.747105464408147
2006	15.648850654112682
2007	14.460075409645139
2008	17.078396660875658
2009	9.933438436801916
2010	10.900996352470242
2011	15.691906590956
2012	15.777496241877422
2013	14.596772471769306
2014	13.318237446230086
2015	8.32568755892815
2016	7.112151895543876
2017	7.575027771836231
2018	9.247165723666708
2019	7.820908271759361
2020	5.101572608508406