Year	% of GNI
1970	12.25919113403591
1971	12.488435664088454
1972	12.668358823174438
1973	12.707722836435094
1974	13.342048829747345
1975	13.852377880506271
1976	13.772479914776593
1977	13.983830050313484
1978	13.93777854908901
1979	14.005489489326907
1980	14.643926220328462
1981	15.199436616989114
1982	15.381782431832283
1983	15.355025544288408
1984	15.273113546505133
1985	15.235588706180728
1986	15.037073826685193
1987	15.10001058848571
1988	15.011727669316699
1989	15.028478226984998
1990	17.3658751977124
1991	17.4377463112238
1992	17.044477791534103
1993	17.327418442592847
1994	16.91736605481134
1995	16.801224609642926
1996	16.24537604656227
1997	15.968759686980754
1998	15.573380764434175
1999	15.397484322273954
2000	15.394616056546388
2001	15.625111605693414
2002	15.823885892325592
2003	15.820022559961107
2004	15.621271961267476
2005	15.538431371560478
2006	15.368877624518698
2007	15.365802731551362
2008	15.772470577583189
2009	16.82519506097238
2010	16.38674300800733
2011	16.178049380896482
2012	16.327139295690614
2013	16.424662777472935
2014	16.491827720629622
2015	16.71527202952832
2016	16.82031739943546
2017	16.735098226352548
2018	16.683598530932883
2019	16.893942401028593
2020	18.18131883467908
2021	17.5993927396357