Year	% of GNI
1975	12.982940451133944
1976	14.119888230214697
1977	14.899620598209713
1978	14.401751294449097
1979	15.031758419254526
1980	14.439200902901332
1981	16.62791411177111
1982	16.85530432543185
1983	16.48459191286657
1984	16.237645871975857
1985	17.156204479529947
1986	16.842985842160186
1987	17.95724897018664
1988	18.62612042045778
1989	20.201864755243754
1990	21.23269522971127
1991	22.001792762489828
1992	23.171874927869595
1993	22.954263290750237
1994	24.961449916923236
1995	25.36267287666185
1996	25.331196139727354
1997	25.949193245437435
1998	24.99765439068415
1999	24.845280308609958
2000	25.259080106799534
2001	25.656927696882896
2002	27.337673821807133
2003	29.135963498510147
2004	31.525191492805284
2005	32.20298084289173
2006	33.66467403698834
2007	34.33807195195894
2008	32.864990241175754
2009	33.3539886793177
2010	34.66483462777199
2011	33.33337023240281
2012	33.39600859275635
2013	32.67433152575175
2014	32.05594087191896
2015	31.169527840507357
2016	30.224896867303762
2017	30.603873724177003
2018	30.194184491688937
2019	29.044323014630688
2020	28.59401297933723
2021	29.65154904504933