Year	% of GNI
1970	13.023994762717962
1971	13.170200890115154
1972	13.21557083345874
1973	13.21310398166493
1974	13.624009238355129
1975	14.129057823662762
1976	13.900318130326358
1977	14.023021094193792
1978	14.042711879391339
1979	14.174792062985409
1980	14.714544001510532
1981	15.12661711646969
1982	15.642551477242888
1983	15.581348982096019
1984	15.267902441904292
1985	15.3454000063573
1986	15.58111432631271
1987	15.625520703834122
1988	15.555994983226727
1989	15.684406716430242
1990	16.72297748303996
1991	17.001160826857927
1992	16.89257581901213
1993	17.246889947880597
1994	17.077104747864478
1995	17.025859363084273
1996	16.53026962860436
1997	16.338621852060157
1998	16.226101850067632
1999	16.315095426109888
2000	16.29349977394983
2001	16.371827944701323
2002	16.421450799266857
2003	16.34102262342014
2004	16.151716596974236
2005	16.117232227821873
2006	16.020230240407393
2007	16.09684560386067
2008	16.68340317020981
2009	17.672805942100297
2010	17.05400041579575
2011	16.882296921139808
2012	16.865665485560296
2013	16.786682041379635
2014	16.7984253102749
2015	16.926521153990183
2016	17.015139963042575
2017	16.8795795193943
2018	16.83296214052549
2019	17.020947488444722
2020	18.13285457251125
2021	17.804254383089567