Year	% of GNI
1970	9.142439813768206
1971	9.102441818483554
1972	9.398656041845284
1973	9.219774256846232
1974	9.140888912645213
1975	9.702919765291565
1976	9.95722486473757
1977	10.123790023266409
1978	10.438453027351114
1979	10.676563889487314
1980	11.265375092969974
1981	11.3341801043864
1982	11.83180987284663
1983	11.805884171143578
1984	11.715555866808424
1985	11.899624769113547
1986	12.659607332624386
1987	12.471126088864763
1988	12.170611931325302
1989	12.282960896154517
1990	18.816005557059587
1991	18.154325477850698
1992	16.761754010070064
1993	16.11167896145032
1994	15.239731553253048
1995	15.105289065206039
1996	13.701236529480235
1997	13.690124048604542
1998	13.878909376593379
1999	13.439948845953625
2000	13.131361914321877
2001	13.71181801296625
2002	13.801750005648039
2003	13.908742748863734
2004	13.707209942787705
2005	13.507612527042223
2006	13.354491476076651
2007	13.346726369483026
2008	13.799266411077042
2009	15.170727803328287
2010	15.292874820880693
2011	15.882504879848799
2012	16.71721391744371
2013	17.426085672334988
2014	17.992238043382955
2015	18.589870909651506
2016	18.68690375395824
2017	18.4694932572211
2018	19.209780351739596
2019	19.649625600928726
2020	20.788764690933302
2021	20.789899274719225