Year	% of total merchandise exports
1981	0.003321232974452371
1982	1.5054433856170648
1983	2.8547413905684387
1984	0.764816419884064
1985	2.5673842741942825
1986	4.163030313897189
1987	8.595908085532116
1988	7.60240126294066
1989	8.021456156237328
1990	6.652551311294494
1991	3.1138113195155754
1992	0.767298687874508
1993	2.963413364718511
1994	0.07694031522383415
1995	0.8263049313484069
2000	0.014209607889913663
2002	0.0022057372139811936
2003	0.35494120429630865
2004	0.10226773976065012
2005	0.512734741984369
2006	1.2071834332132338
2007	2.706966349768134
2008	2.780676542741054
2009	4.736662134131078
2010	5.538938732218997
2011	2.515862741490786
2012	2.86050294086436
2013	4.474022149439197
2014	3.2875408046336907
2015	2.657787996395317
2016	3.1919356861658232
2017	3.106932891852279
2018	1.9875784940932621
2019	2.2503402668586667
2020	2.3317211915199616