Year	% of GNI
1987	8.10917357964353
1988	6.247592246262798
1989	7.283504708904261
1990	5.161483802929569
1991	3.2052074105136468
1996	8.158006403539913
1997	9.419001190222055
1998	10.710652385970548
2001	12.4177369700288
2002	14.824144052573097
2003	15.403984927697525
2004	17.382622153149377
2005	17.079086720810032
2006	19.100695138638528
2007	19.58037930705223
2008	20.195121490252838
2009	16.670209345316497
2010	19.17558621454498
2011	19.76838267343568
2012	19.87950909722324
2013	18.946675250103212
2014	19.472511420476913
2015	17.987515892115844
2016	19.159438605826537
2017	20.19535817981771
2018	20.46080827099744
2019	24.08634260869583
2020	23.79499914268682
2021	23.299601129568646