Year	% of GNI
1977	9.421735457899382
1978	9.527817874888378
1979	9.37673466191678
1980	12.662841473991872
1981	10.475399265934062
1982	7.5058916786335725
1983	6.860124931977161
1984	6.643200861612483
1986	5.276506409881643
1987	3.8140306725898707
1988	4.219132093818706
1989	4.616226624234924
1990	1.973878668052036
1991	1.2526544169744067
1992	2.2244131338278326
1993	3.9798793829950494
1994	4.321113866321481
1995	4.838258802498215
1996	4.232153648690542
1997	4.076980535496988
1998	3.9640352967647434
1999	3.450826168353654
2000	5.667993649695699
2001	5.14941228225967
2002	7.4797416887357695
2003	8.078721380094054
2004	8.3906024882176
2005	8.143873667278953
2006	9.101294049183426
2007	8.973530726982068
2008	13.924167501585698
2009	9.348466165430386
2010	9.849262952018844
2011	10.033393927021654
2012	11.834295428252517
2013	7.85036376930308
2014	10.391161161933766
2015	7.3502350006506845
2016	7.0518622587268265
2017	8.31814786925484
2018	8.509946274693606
2019	9.848992042173492
2020	11.52178548934019
2021	13.220979766036928