Year	% of GNI
1970	14.7499142402842
1971	14.9101613844977
1972	14.8234949949129
1973	14.5246148529455
1974	14.6022306486814
1975	14.9231197810048
1976	14.4188402888602
1977	14.7455285643314
1978	15.1069150992765
1979	14.8916774223064
1980	15.2993403042978
1981	15.8100263573724
1982	15.9326713067359
1983	15.6895063182059
1984	15.6899231029234
1985	15.5426031740522
1986	15.5882766723879
1987	15.6909449159981
1988	15.4957754275224
1989	15.5079622407347
1990	15.3782184691492
1991	15.4996746263716
1992	15.7571359670374
1993	16.0880296486829
1994	16.0632009039669
1995	15.9132015421617
1996	15.9338340375494
1997	16.113522306242
1998	16.1740705087647
1999	16.3991053803839
2000	16.3871104281832
2001	16.7569232613134
2002	16.7962991662701
2003	16.962463169119
2004	16.813427968028
2005	16.8007825244507
2006	16.4814304386371
2007	16.3108402575653
2008	16.4764651850806
2009	17.5056404737345
2010	17.3593818142211
2011	17.2612262612696
2012	17.5902610487799
2013	17.8854924814647
2014	17.9705514478095
2015	18.0723393489163
2016	17.8290233583492
2017	18.1043376758237
2018	18.1691123953571
2019	18.3788544556595
2020	19.7102813307425
2021	19.5854738937267