Year	% of GNI
1991	0.39165084139462786
1992	0.37773805529793003
1993	0.3767863401043017
1994	0.3653538493734188
1995	0.33660806500391327
1996	0.31326853255527903
1997	0.2982475042143416
1998	0.2937491209388433
1999	0.2664463144483687
2000	0.25203615475892355
2001	0.24117464097894387
2002	0.23154716912239076
2003	0.23130758150212535
2004	0.22320119732180543
2005	0.21630235946862642
2006	0.24372739067431096
2007	0.23847959720958622
2008	0.24062843758472183
2009	0.246912006098006
2010	0.2477233122247911
2011	0.24971010495225732
2012	0.24512741999874477
2013	0.2543773690230652
2014	0.2546366999854367
2015	0.25945988809821935
2016	0.25954970687335066
2017	0.25040125762800614
2018	0.24627881838704946
2019	0.24239982619898262
2020	0.26442130262728775
2021	0.2527313036756876