Year	% of GNI
1970	0.1761032834885632
1971	0.1310842741269933
1972	0.15340652115884731
1973	0.346856545963023
1974	0.672435477966144
1975	0.465729364609888
1976	0.60554467704932
1977	0.7693649316411221
1978	0.9746217185736763
1979	2.994248512831777
1980	4.387506016150031
1981	3.366477027899542
1982	3.8266776290589943
1983	5.952329362800277
1984	6.849340153848843
1985	5.868932422251376
1986	3.3623842539832367
1987	5.263383806723465
1988	3.6489034151716053
1989	4.314394530759974
1990	4.825890587193894
1991	2.3025663367636002
1992	2.105889847203936
1993	1.454291252257028
1994	1.372650851313539
1995	2.358743866031911
1996	2.749610576172269
1997	1.7727070446232862
1998	0.9349035722821506
1999	1.577073876283285
2000	2.469196991482523
2001	1.8225456274352212
2002	1.9743472080249946
2003	2.736490615924571
2004	3.4487578225789104
2005	4.688564789253147
2006	5.135251804934253
2007	4.7980890193515435
2008	5.582407089938993
2009	3.404783557126212
2010	3.92101452842859
2011	5.768561670175286
2012	5.455522807239219
2013	4.62945554559137
2014	3.8334487309699097
2015	1.668726956894842
2016	1.464214876174337
2017	1.7559171245430778
2018	2.321812916910643
2019	1.676415169684968
2020	1.10590360336365
2021	2.756993801521042