Year	% of GNI
1990	4.2952144240529
1991	3.93275565611571
1992	3.81854804036162
1993	3.59143925289562
1994	3.39584074242565
1995	3.25014520053049
1996	3.11926763138438
1997	2.94040101384202
1998	2.7251454106756
1999	2.54175449304092
2000	2.38850046244778
2001	2.23359953545734
2002	2.10068005592959
2003	1.97805285220536
2004	1.85619014283489
2005	1.73845113043784
2006	1.6108231587214
2007	1.50275046843524
2008	1.39939432534047
2009	1.34028411874526
2010	1.27839644083764
2011	1.20016989286272
2012	1.11586289570009
2013	1.03554586233228
2014	0.967337615610139
2015	0.901436454569714
2016	0.852057273789943
2017	0.792205274817647
2018	0.735478137066551
2019	0.685364492847128
2020	0.663393274439229
2021	0.61475905951911