Year	% of GNI
1970	10.922910387606
1971	11.3704053812869
1972	12.5953071974524
1973	13.6071208775912
1974	15.4461668388277
1975	15.4381813687071
1976	14.6340903694203
1977	13.6136483863979
1978	12.7034185391484
1979	11.9947460086688
1980	12.4651267238264
1981	11.4171778483688
1982	11.8792713193037
1983	12.2230222586887
1984	11.9918314165087
1985	11.5309847816049
1986	11.7691615732062
1987	12.4542615942896
1988	11.6397172054374
1989	11.2565812373999
1990	11.7791102439198
1991	12.2273010770911
1992	12.8668061046451
1993	12.7585622258679
1994	14.1790455608936
1995	14.1299911747136
1996	14.3630016632625
1997	12.8714527753697
1998	11.7583028180275
1999	11.6995025073105
2000	11.5593333137702
2001	10.4025182236521
2002	13.0498505261433
2003	21.2507869226438
2004	21.4311173629678
2005	18.3491615222033
2006	17.6727558051848
2007	17.5739239268398
2008	19.4538294493298
2009	21.0217351469841
2010	20.4195918625773
2011	18.3632481360255
2012	18.1929760381767
2013	19.2614034354427
2014	19.4469220586714
2015	19.4043082598179
2016	22.1162787382631
2017	21.4151825213502
2018	22.1466046029302
2019	21.6318406160162
2020	20.2776809717489
2021	20.4961224936245