Year	% of GNI
1971	4.894395816966185
1972	5.942553911542797
1973	7.760358780720859
1974	22.21255473697009
1975	16.693543473139886
1976	16.56248329098095
1977	15.500848790452311
1978	15.666273578967663
1980	18.413019126043306
1981	11.635732617116702
1982	8.99722736567288
1983	7.924224450457257
1984	7.701258336037491
1985	7.368966131817617
1986	2.875296887064871
1987	5.289840517062734
1988	4.6349556061823645
1989	6.95483714528376
1990	6.165410249807336
1991	7.386062646058432
1992	6.503011899932052
1993	7.5046503704254075
1994	7.87557622880709
1995	6.508588878872282
1996	6.622674114617075
1997	5.714273695861346
1998	3.8706933588987145
1999	5.360052673076048
2000	8.175369269567772
2001	6.603792504022421
2002	6.522878160325341
2003	7.167490449354716
2004	8.706475457653053
2005	11.006388686042197
2006	11.32989428376422
2007	10.112623932186143
2008	11.342909054751358
2009	6.834344544670995
2010	7.5731141779018225
2011	8.495261178602677
2012	7.488145154788737
2013	6.891558770136411
2014	6.5341477121601805
2015	3.9852927471258393
2016	3.6282401678165312
2017	5.062537220834085
2018	7.33183611792092
2019	6.057569040307825
2020	3.609708332823554
2021	6.401861176331516