Year	% of GNI
1970	12.377260104716404
1971	12.591340958657527
1972	12.689031047330475
1973	12.652329080915624
1974	13.205929273492282
1975	13.750186573561368
1976	13.596085660064519
1977	13.779577795550498
1978	13.69061492344693
1979	13.728764631911472
1980	14.405353991470314
1981	14.994893688779428
1982	15.265416019211662
1983	15.314156419803338
1984	15.253956397198545
1985	15.231293352195609
1986	14.985324335778534
1987	15.033532900734922
1988	14.907672959278917
1989	14.96114868353505
1990	15.232102604143188
1991	15.42037088449108
1992	15.52894574738381
1993	15.884064265762778
1994	15.689090711198213
1995	15.606618243166922
1996	15.585018670014838
1997	15.53699089545052
1998	15.46146743819898
1999	15.520103112860406
2000	15.680955318261036
2001	15.818718022755402
2002	16.0340701043557
2003	16.104898181669093
2004	16.02506558191228
2005	16.097165672629604
2006	15.99498158843011
2007	16.02555540103557
2008	16.476736789490737
2009	17.330669751393515
2010	17.209051162818064
2011	17.190580480982476
2012	17.486183014478378
2013	17.510859163541955
2014	17.407058565492353
2015	17.459577062831986
2016	17.384856371701463
2017	17.309041947751176
2018	17.354245020434625
2019	17.527956112625006
2020	18.83965287288199
2021	18.379960428514845