Year	% of GNI
1970	1.5464696664482365
1971	1.4932012115844784
1972	1.811607368801603
1973	2.542032516356394
1974	5.418833261711556
1975	5.60287950179204
1976	6.518552262869763
1977	6.178528516435734
1978	6.625465418062186
1979	10.17338847447262
1980	10.443695955324772
1981	8.698841550244419
1982	7.57497485828544
1983	7.040056050259492
1984	6.2232814294470575
1985	5.919898997855852
1986	3.707892735680273
1987	4.743141676124495
1989	3.5286812982914535
1992	2.8467841279901838
1993	2.5591920153733714
1994	2.0710494869649856
1995	2.025732335602784
1996	2.108638703719527
1997	1.786061191812099
1998	1.009125989489146
1999	1.7416189767468864
2000	3.126501605863721
2001	2.6943618966289016
2002	2.5045577344582926
2003	2.745570307193627
2004	3.7387158778434086
2005	4.4015649910419254
2006	4.851368583502702
2007	4.600947784226028
2008	5.79050653764538
2009	3.0911221739483903
2010	4.095070043174393
2011	5.212437646023308
2012	3.828428240926988
2013	3.245341298848694
2014	2.770941392573037
2015	1.5112492010694687
2016	1.2527550828011396
2017	1.535152938400864
2018	2.0159097507946293
2019	1.716628792703856
2020	1.0332096884163995
2021	2.214255523537236