Year	% of GNI
1990	3.659714613313213
1991	3.54890375640967
1992	3.500809708031325
1993	3.4612801042658536
1994	3.3094707006326534
1995	3.14415542807116
1996	3.2101930889799033
1997	3.03141015767658
1998	2.988873641060879
1999	2.922431641218012
2000	2.958718860771215
2001	2.9653035801899
2002	2.895777928418814
2003	2.8066927804565753
2004	2.673474906591621
2005	2.5082718572280482
2006	2.286246174196844
2007	2.1957967734663986
2008	3.6783481850971604
2009	3.356411672322527
2010	3.1483701116831933
2011	2.7761499629113184
2012	2.6224667636113526
2013	2.511004703728399
2014	2.3389198617297198
2015	2.263237208217002
2016	2.173007687013914
2017	2.0851549148810933
2018	2.009336336365236
2019	1.927235444966449
2020	1.8610178057086193
2021	1.7155390983994283