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	15.666273578967665
1980	18.413019126043306
1981	11.635732617116702
1982	8.99722736567288
1983	7.924224450457259
1984	7.7012583360374895
1985	7.368966131817616
1986	2.875296887064871
1987	5.289840517062736
1988	4.634955606182365
1989	6.954837145283758
1990	6.165410249807335
1991	7.386062646058432
1992	6.503011899932052
1993	7.504650370425407
1994	7.875576228807089
1995	6.508588878872282
1996	6.622674114617074
1997	5.714273695861347
1998	3.8706933588987136
1999	5.360052673076048
2000	8.175369269567772
2001	6.603792504022422
2002	6.522878160325341
2003	7.167490449354719
2004	8.706475457653053
2005	11.006388686042198
2006	11.329894283764215
2007	10.112623932186144
2008	11.342909054751358
2009	6.834344544670993
2010	7.5731141779018225
2011	8.495261178602677
2012	7.488145154788738
2013	6.891558770136412
2014	6.5341477121601805
2015	3.9852927471258393
2016	3.628240167816532
2017	5.062537220834087
2018	7.33183611792092
2019	6.057569040307824
2020	3.6097083328235544
2021	6.401861176331516