Year	% of GNI
1977	3.5875300172461
1978	9.59599188980825
1979	21.2291434819353
1980	23.5664216709568
1981	19.5100752147451
1982	20.8283784475031
1983	15.3652399971784
1984	15.7770082620061
1985	17.9889596551686
1986	8.24563694796291
1987	9.36190104713032
1988	6.67290918598673
1989	9.30345100811769
1990	5.48992138892211
1991	6.61256438816524
1992	6.58774284592865
1993	7.11375831573439
1994	11.1801753050362
1995	10.3925816034889
1996	9.92062627959206
1997	11.8961100116569
1998	10.2052576801249
1999	10.2544528567129
2000	9.35915419655351
2001	8.59430621447243
2002	9.74551492260123
2003	10.378096032894
2004	12.4305915299306
2005	15.5275030515396
2006	20.592359408095
2007	21.7155454843216
2008	20.0210184870917
2009	16.9078204729685
2010	19.4258050301253
2011	20.7925473641126
2012	19.0125966592113
2013	17.2763743621875
2014	14.8265025681604
2015	13.199347694846
2016	12.3802074814153
2017	12.4544218500171
2018	11.9916978510006
2019	11.9375519039768
2020	10.641472541442
2021	12.0273147391142