Year	% of GNI
1975	20.561156730218084
1976	20.50983796400354
1977	21.953270742714036
1978	23.90634616224475
1979	22.254063627778432
1980	22.27599493724015
1981	21.187730550775203
1982	22.651383656792408
1983	22.15275859835601
1984	22.702627437485187
1985	23.399573981706006
1986	24.89036590629156
1987	27.78721631238441
1988	32.5264766285321
1989	34.48883720347305
1990	33.313179592003905
1991	35.06820388894237
1992	34.67568903861314
1993	36.55469278977006
1994	36.45259285338442
1995	36.50854368031411
1996	35.497468506975295
1997	33.24521137472007
1998	33.02552649838723
1999	31.418502179246037
2000	31.401240399167012
2001	29.037567128168394
2002	29.127894285843684
2003	29.165919210930245
2004	29.16671692062659
2005	29.56676422640349
2006	31.62071251318201
2007	33.38605145818868
2008	31.8225973271635
2009	30.337147660241342
2010	30.923000387764287
2011	32.210852922104245
2012	30.320564294250456
2013	29.07941553855825
2014	28.975885779582093
2015	29.569183519269703
2016	31.558949138298484
2017	33.44051339371672
2018	33.295620618935644
2019	32.91068226726522
2020	28.789147779163436
2021	28.522790308341378
2022	27.45394217283979
2023	25.860517397885175