Year	% of GNI
1970	6.20214932947151
1971	6.6247149494732
1972	6.83422960003754
1973	7.42133135733713
1974	7.33859379354816
1975	7.60926728088099
1976	7.63913468906971
1977	7.90249475858562
1978	7.58458031911989
1979	8.22268046286625
1980	9.68737615474612
1981	9.89222950181548
1982	10.6233779528222
1983	10.7653098319634
1984	10.4675295161216
1985	10.9513998133355
1986	11.2237414879075
1987	11.5265030696607
1988	11.8091451271959
1989	11.948224620724
1990	12.5716165272036
1991	12.150333665047
1992	13.0298232984437
1993	13.2914432739883
1994	12.9925418756496
1995	14.4954761870466
1996	15.1215404384267
1997	15.8214905498829
1998	18.5221763824536
1999	17.6872285755515
2000	17.2998243976532
2001	17.4084254224734
2002	16.7154753023084
2003	17.0033382789564
2004	16.9687606084687
2005	17.1843387890564
2006	17.1886773305715
2007	16.841977623071
2008	18.0187139138003
2009	18.8084586018223
2010	18.0537267896567
2011	18.4514260369112
2012	18.7848185217231
2013	18.7574505015138
2014	18.7975396036011
2015	18.6188354487971
2016	18.4761240321934
2017	18.4287988192253
2018	18.844208910449
2019	19.6669489635874
2020	20.4203170338935
2021	20.6467371051531