Year	% of GNI
1975	30.4207793606134
1976	28.8410551105951
1977	26.562908793196
1978	27.293139921369
1979	27.6130687373888
1980	31.4786545802807
1981	32.123309039115
1982	30.7237145637684
1983	31.2091873584956
1984	33.6802961729924
1985	32.677190843295
1986	27.350877263343
1987	27.2236215662094
1988	26.9296265399964
1989	27.8558853199196
1990	27.5608043524283
1991	26.310128385682
1992	25.4418165614711
1993	25.4913405968361
1994	26.2706288543342
1995	27.9146265654436
1996	29.846667572413
1997	31.5317858472278
1998	28.2962553194416
1999	30.3194341914073
2000	37.0590776168907
2001	36.3820432184378
2002	32.6555369820417
2003	31.4052755270647
2004	33.99878110009
2005	38.4412230601358
2006	40.2981732468408
2007	39.712099673129
2008	42.0753868930549
2009	35.3369667755101
2010	36.221048778568
2011	38.2330122854667
2012	38.7553973484862
2013	37.846570930581
2014	37.5425298823587
2015	34.1885411198815
2016	31.2008993476388
2017	32.1246762973649
2018	34.7164962669325
2019	31.7854541170262
2020	30.1955835870461
2021	38.6186234455404