Year	% of GNI
1970	2.6089377070205617
1971	2.206858021779332
1972	2.4392512831232107
1973	3.201476347610998
1974	2.9144121757965333
1975	2.854570480733816
1976	2.5811513692334467
1977	3.5769202101678936
1978	3.1190279137677925
1979	2.717813437567425
1980	2.846127952616774
1981	2.5943514683337296
1982	3.5144551366312307
1983	2.765900768450092
1984	2.490596566907878
1986	2.6355635539685203
1987	2.4117439563785408
1988	2.555687640646582
1989	2.7720138593031423
1990	3.192628756193395
1991	2.9106537804650694
1992	2.9031210256032547
1993	2.781718009173399
1994	4.399493796763995
1995	5.407654978233199
1996	4.9426541286173125
1997	4.582989917837226
1998	4.427028192982837
1999	3.0626487746227182
2000	3.600795498938566
2001	3.251461595922031
2002	3.4937273140899583
2003	4.339191369174266
2004	3.0342929185502343
2005	2.907495162752956
2006	2.467206912822889
2007	2.905025348767819
2008	1.1492498330587955
2009	1.2138492085619965
2010	0.9492189910775076
2011	0.9639653174257169
2012	1.0308152410823452
2013	0.991648364496428
2014	0.9922686488376384
2015	1.189999842823828
2016	1.406298264644377
2017	1.484565547858057
2018	1.034550315686589
2019	0.8788612665244775
2020	1.0169667752369613
2021	1.0264950391782042