Year	% of total merchandise exports
1981	0.2016723225336321
1982	0.013944034431085214
1984	0.0005897375485779917
1985	0.03645474588538613
1987	0.019210602417633334
1988	0.0001948433367542158
1989	0.025129627821777075
1990	0.0765141341716987
1991	0.07896573780033517
1992	0.29551488085068156
1993	0.392055500790472
1994	1.595144918523448
1995	0.5261207117706704
1996	0.5308278851250029
1997	0.4562978534408518
1998	0.9371161082564442
1999	1.1476994591985958
2000	1.14846963373005
2001	0.14633385583675276
2002	0.9700160654752047
2003	0.9037769610206824
2004	0.1629345002560251
2005	0.19149868540419962
2006	0.879486540882392
2007	0.07535153576580232
2008	0.5295802550109225
2009	0.6252661016183922
2010	0.6518354898154993
2011	0.23036681253054053
2012	0.304527180698789
2013	0.3837672810563396
2014	0.8071825637331793
2015	0.696328205977463
2016	1.4805565035414772
2017	2.0889879986041886
2018	1.4280180666602387
2019	0.30399479370481985
2020	1.43607177944283