Year	% of GNI
1970	1.7154240737771198
1971	1.590913202668169
1972	1.4977611804387003
1973	2.3273105557236233
1974	6.669616466457504
1975	4.511824787520103
1976	4.478462295050742
1977	3.583019186486047
1978	3.3343691602294223
1979	7.410291301077551
1980	7.22676624542564
1981	5.239322007777319
1982	4.067583312399418
1983	4.966275260016062
1984	5.501691539478493
1985	4.6492036587559395
1986	2.341948978088998
1987	3.6127191599996022
1988	3.008234320081842
1989	2.7283689730648972
1990	3.2633992097448368
1991	1.7764995848765308
1992	1.6760360650123982
1993	1.3526827197041864
1994	1.2645891101607762
1995	1.488631727140822
1996	1.7306632219079838
1997	1.4179225966805409
1998	0.8305676134820091
1999	1.523055801575813
2000	2.4093511942521486
2001	1.884361169659009
2002	2.229587249608069
2003	2.571859592503297
2004	3.260778992214943
2005	4.161779255279237
2006	4.734117374664225
2007	4.253915826737657
2008	4.3714161278774055
2009	2.3760557145525634
2010	2.8371422939128608
2011	3.852592997514699
2012	3.51056660604749
2013	3.0877649051185077
2014	2.688692567043336
2015	1.438170165378232
2016	1.2858408422405467
2017	1.596810993545853
2018	2.261583977211801
2019	1.7848874915245923
2020	1.349005349428095
2021	3.6824202347069956