Year	% of GNI
1970	0.5874020125142627
1971	0.6982571785676135
1972	1.2966947647171847
1973	3.6224896439062144
1974	7.696324406106378
1975	5.798628735580256
1976	6.178461951954831
1977	4.475368234498776
1978	5.037168845394245
1979	11.068958258808394
1980	10.418067926320013
1981	7.456856962086891
1982	5.310731768542491
1983	8.997298990249952
1984	9.410683402217323
1985	9.576650501825274
1986	5.179572916975636
1987	5.196045167809134
1988	7.632616132251777
1989	9.816735756446963
1990	12.537796120932128
1991	6.6875348018735234
1992	6.243019802350858
1993	5.498755589517727
1994	5.597974656106115
1995	6.647724941881561
1996	7.620689478968828
1997	5.935879717782633
1998	3.3595955431119715
1999	6.455606181225777
2000	13.149448014544829
2001	6.724653103297758
2002	5.711903230652767
2003	6.115222051102192
2004	9.581432740169928
2005	13.96217337907311
2006	15.46760671055996
2007	14.00486526039345
2008	15.422978603729128
2009	7.342473391670728
2010	9.85463781154314
2011	13.62728210469145
2012	12.021434339099377
2013	10.565348060603892
2014	9.827439395717686
2015	3.7288954983810214
2016	2.9554685035107284
2017	4.08692674248751
2018	6.22088305258164
2019	5.1141433200136
2020	2.33936013727819
2021	5.74761865404566