Year	% of GNI
1970	12.3259593015013
1971	12.7441451024008
1972	12.7971477633604
1973	12.2091610150103
1974	12.8659642039564
1975	13.2506128579861
1976	12.9463595122341
1977	13.0495308380756
1978	13.3143584700293
1979	13.7789779294734
1980	14.2413498456632
1981	14.9335795427557
1982	15.3288842776514
1983	15.2101192098037
1984	14.9683748823064
1985	15.2804524163459
1986	15.3755189562684
1987	15.8980813422146
1988	16.2247170951186
1989	16.2562328771947
1990	16.5917290712886
1991	16.5706932339761
1992	16.8348280127451
1993	16.8576145143409
1994	16.3849577724214
1995	16.0069104193197
1996	15.7957820241792
1997	15.4123130971946
1998	15.3847345749628
1999	15.221968077576
2000	15.3860192618728
2001	15.9041872253166
2002	16.3322887921765
2003	16.3561514427454
2004	16.4214083431873
2005	16.3641031897975
2006	15.9347248463259
2007	15.8801739166842
2008	16.6602804348962
2009	17.7195019363156
2010	17.3304225935742
2011	16.9738867999082
2012	17.2266825265255
2013	17.2575912808554
2014	17.203482634851
2015	16.9466659275516
2016	17.0603359334566
2017	16.644967121879
2018	16.5297573524056
2019	16.726217679556
2020	18.0890206900984
2021	17.499247454135