Year	% of GNI
1970	0.266208705443287
1971	0.339954535149516
1972	0.894607782042148
1973	2.538182481287258
1974	11.077484448976062
1975	9.314316670012127
1976	10.15344385415872
1977	11.026418524760066
1978	9.606666707379883
1979	22.977326070265025
1980	18.934911305000675
1981	13.594548146936255
1982	6.842731860037413
1983	9.172753303315412
1984	9.737284867402966
1985	8.924586702817264
1986	5.097625351560642
1987	7.487451299576206
1988	5.669329996644932
1989	8.343105852275805
1990	9.737934170060473
1991	5.790980418647252
1992	5.6207236761261035
1993	4.529802555750432
1994	3.768516669539702
1995	3.869885123019093
1996	4.181281244169301
1997	3.848953421937483
1998	5.256312173124259
1999	5.37728674525367
2000	8.202803008881128
2001	6.212582546360241
2002	4.8396002644247575
2003	4.591702908940247
2004	5.883762362471864
2005	7.223341485997279
2006	6.231191719511839
2007	6.20685688108018
2008	6.691957240324277
2009	3.817904403455672
2010	4.21032276374956
2011	5.3102985178480635
2012	3.6727569833751366
2013	3.259564170513059
2014	2.805514189558067
2015	1.639985907638828
2016	1.413248683420929
2017	1.676041124432174
2018	2.442392899074603
2019	1.9960531526794032
2020	1.325421316974962
2021	3.2330287366639103