Year	% of GNI
1970	5.5351517474858225
1971	5.222741101306177
1972	5.145170577269889
1973	4.959888878109698
1974	4.916644222444436
1975	5.199791934507462
1976	5.265598325523616
1977	5.131894951939132
1978	5.016175277155405
1979	4.867783115616599
1980	4.841828903253505
1981	5.013896545487109
1982	5.027443341822186
1983	5.1102188560113975
1984	5.332238261106303
1985	5.181395575662311
1986	4.30349868374689
1987	5.07281579859578
1988	4.283306892943342
1989	4.202128586830784
1990	4.215564685288043
1991	4.2659883339316504
1992	4.57371486527878
1993	4.568224455523525
1994	4.7265012517012845
1995	4.481557797362523
1996	4.496133361368218
1997	4.552825254185412
1998	4.138009998717112
1999	4.109316324152405
2000	4.177708487523277
2001	4.321030451349668
2002	4.381704961631199
2003	4.488843705682312
2004	4.381751730176807
2005	4.298892755593297
2006	4.37879581692815
2007	4.342726060749461
2008	4.408323905878087
2009	4.5325882439595695
2010	4.599965264029085
2011	4.605545921087325
2012	4.469889760489692
2013	4.836388520680805
2014	4.812735320095524
2015	4.440508512942539
2016	4.363059548125457
2017	4.436185251989566
2018	4.364389456619348
2019	4.384423364411519
2020	4.384700452055297
2021	4.411380002509503