Year	% of GNI
1975	21.801872582316438
1976	19.49597268239257
1977	20.080075028818808
1978	19.901581830599635
1979	18.531199649920858
1980	18.411758660026273
1981	19.369810564450223
1982	16.125379526419817
1983	14.08436291099417
1984	16.625437852444023
1985	20.095913688037925
1986	17.891739505424088
1987	22.644687138402077
1988	24.909653700565862
1989	33.97764349433344
1990	19.47351500716746
1991	19.16240604055315
1992	20.58673015218779
1993	20.759751104343007
1994	19.87901369504597
1995	14.64392978613549
1996	14.231667537227299
1997	13.94123267330771
1998	14.183414268968653
1999	13.14193898096875
2000	14.40658625369129
2001	14.050802016414137
2002	15.940650769510334
2003	16.95603125271133
2004	19.42902411946383
2005	18.653300521780718
2006	18.882323733414484
2007	19.766211215056742
2008	19.71014691885151
2009	16.75102291450943
2010	18.36984800807291
2011	19.09186957518655
2012	18.13047083698091
2013	18.407465727510136
2014	16.44076791057417
2015	14.807988002041025
2016	13.712672915734453
2017	13.836442819164711
2018	13.070873054874706
2019	12.588777775031739
2020	15.10853931088076
2021	17.708979514023966
2022	16.299244313989625
2023	16.05590006022933