Year	% of GNI
1971	4.759114052552254
1972	5.840720048337301
1973	7.611929389944919
1974	21.957608250851315
1975	16.49788355216211
1976	16.47657618681759
1977	15.349815185107236
1978	15.574504455151478
1980	18.34024785565333
1981	11.56199304794637
1982	8.87357494977598
1983	7.843185500967778
1984	7.628886918486695
1985	7.329472673868881
1986	2.8206467667614663
1987	5.222950236739599
1988	4.458130389921195
1989	6.846059192705369
1990	6.098119155819444
1991	7.218705694460638
1992	6.368370176044826
1993	7.414308250359604
1994	7.753522378416982
1995	6.359116272303964
1996	6.514395337901328
1997	5.542430195424165
1998	3.7033098383817427
1999	5.230913170327945
2000	8.037502580010944
2001	6.49165167373451
2002	6.420512326549401
2003	7.049245966640749
2004	8.55348387343465
2005	10.815208468078309
2006	11.058498545664245
2007	9.79925860335792
2008	10.855675908197034
2009	6.50347685594927
2010	7.221057412164677
2011	8.07514358077266
2012	7.1892545265902905
2013	6.605336683464977
2014	6.283374077509427
2015	3.796931269573114
2016	3.450399845904398
2017	4.818997576145757
2018	7.0894932265764155
2019	5.833835994134686
2020	3.388057807640936
2021	5.848148692231756