Year	% of GNI
1979	22.807933161321746
1980	22.675472928318108
1981	22.02924047087875
1982	22.79338284705269
1983	22.99774615101166
1984	23.595141456549083
1985	24.071720367173455
1986	22.057867764428185
1987	23.119538773104384
1988	23.22594905468102
1989	25.768239953741972
1990	23.142704800738866
1991	22.88053068071202
1992	23.332587489025993
1993	24.54550124712328
1994	25.715885061150757
1995	24.836616997602295
1996	24.961560925026223
1997	24.638258399702046
1998	24.22261988677699
1999	24.48455005006461
2000	25.308670453402975
2001	25.43844464669908
2002	26.566785581842534
2003	27.812782988900274
2004	29.782010913334304
2005	30.45364720452386
2006	32.12329950341565
2007	32.83185616171399
2008	33.54571849365471
2009	31.822315214314806
2010	33.372368830750396
2011	33.44799637797046
2012	33.30026346523591
2013	32.38892573106618
2014	32.579325850079705
2015	32.76165552113379
2016	32.27360815224809
2017	32.83912284743957
2018	33.51426884789099
2019	32.98876258416498
2020	33.51919946793828
2021	35.25698691131044