Year	% of GNI
1990	0.507475958334482
1991	0.439012612531695
1992	0.402928558516669
1993	0.395976842542884
1994	0.38122727717452
1995	0.398270914634334
1996	0.402163339832611
1997	0.402832002949729
1998	0.36116481122469
1999	0.376308763675171
2000	0.350216294703017
2001	0.342916255058625
2002	0.328319093004869
2003	0.333886119949113
2004	0.323305553555995
2005	0.362671120989167
2006	0.340809539122442
2007	0.332021363298937
2008	0.34500988212078
2009	0.3459459340125
2010	0.338675247253775
2011	0.323451741018238
2012	0.312740057995155
2013	0.301984630648662
2014	0.289719417147517
2015	0.304324493807742
2016	0.307844957094387
2017	0.303642843828838
2018	0.301127915085717
2019	0.314743779735261
2020	0.328832933283055
2021	0.321404139074823