Year	% of GNI
1970	5.93271981159266
1971	5.58704970938418
1972	5.41707450210365
1973	5.17455480040648
1974	4.30122747870024
1975	4.80797457999254
1976	5.55341868326518
1977	4.75522011550182
1978	7.60062304923813
1979	4.96084282576797
1980	6.15506684676792
1981	5.44370056873021
1982	5.35139224432873
1983	5.06547214877108
1984	4.54862419995139
1985	4.56079220383813
1986	4.25854234327729
1987	4.4451554856441
1988	4.16840973584403
1989	3.84494837784562
1990	3.89634624478224
1991	4.40221382845435
1992	4.34097007211256
1993	4.51754679394998
1994	4.75774270961105
1995	4.82226606956539
1996	4.90029114188228
1997	4.86290661486682
1998	6.15957146671972
1999	6.18452481646079
2000	6.12664583797218
2001	5.30585374058346
2002	5.14921286213091
2003	5.1103729091861
2004	5.63983642831459
2005	5.80179410104567
2006	6.11483489350386
2007	6.06672998862313
2008	6.262758764819
2009	5.87014956366438
2010	6.09434168033834
2011	6.47016256684063
2012	6.59826425630461
2013	7.05729593790172
2014	7.47896839167096
2015	7.13685540831244
2016	7.07963926804797
2017	7.47796470851406
2018	7.34226649465699
2019	7.44767626757072
2020	7.83504741605065
2021	7.84497118801142