Year	% of GNI
1970	7.98009321982523
1971	10.7916512598183
1972	16.7864653567545
1973	23.6207624492811
1974	33.2493288518054
1975	21.9438595141887
1976	23.3369409557855
1977	23.538927915896
1978	19.2487002054907
1979	41.7078874106066
1980	34.1704976876324
1981	26.8334666198218
1982	12.9799767260818
1983	9.5845397846138
1984	8.59816041261983
1985	5.0173480007412
1986	5.8151643261367
1987	5.89959778095949
1988	4.56061051894543
1989	5.86291727989337
1990	10.6392777456481
1991	8.25496509193616
1992	8.70593903240701
1993	8.24197646717777
1994	7.53829659640836
1995	8.15129692473871
1996	10.2538607297452
1997	9.06192861137134
1998	6.74093600667827
1999	7.80781011467929
2000	12.7358500033487
2001	9.84406650427992
2002	8.86005347844297
2003	11.7838892822402
2004	13.9079474914918
2005	15.733691748504
2006	15.6342756436679
2007	14.4466223090358
2008	17.0656027114995
2009	9.91848331150372
2010	10.8808212673557
2011	15.670613006682
2012	15.7366871356309
2013	14.5678626995041
2014	13.3021905388007
2015	8.30884917569003
2016	7.10503333993184
2017	7.55002121090031
2018	9.21548820098041
2019	7.79255965318172
2020	5.06636514056738