Year	% of total merchandise exports
1981	6.954661849177675
1982	4.5772647701029605
1983	3.216286236995837
1984	3.0590712857077462
1985	2.635133384060057
1986	0.7502988222126274
1987	1.8455920302453843
1988	2.61575017226567
1989	6.214955559567458
1990	3.4861329922166076
1991	2.528560120183871
1992	5.723404044633284
1993	0.004000288019066765
1994	0.017180847093964155
1995	0.1079648098741937
1997	0.015467326378818577
1998	0.286136831279912
1999	0.2505736818685304
2000	0.0008918082297421643
2001	0.06177110143435971
2002	0.056328932943664506
2003	0.20377692761151728
2004	0.021210948276788023
2005	0.055491209494277965
2006	0.03001538502404775
2007	0.04399079007048308
2008	0.07789464421311455
2009	1.0482548066746429
2010	1.8756114775620045
2011	0.34690521284950704
2012	0.9710014990603344
2013	0.912765708697097
2014	1.5165881599968265
2015	1.5000451041046505
2016	0.9642516215790234
2017	0.9729013186100621
2018	0.6743755709794904
2019	0.6614022769676003
2020	1.0066888296396506