Year	% of total merchandise exports
1996	0.0631761069619307
1997	1.0588278578413568
1998	7.396197478614268
1999	0.34905639174350356
2000	0.17772089770823163
2001	0.001049443170797961
2002	0.0024072884841735507
2004	0.0009436100762973083
2005	0.03692976045365221
2006	0.05121578952149022
2007	0.017694832472546596
2008	0.12525038521943907
2009	3.369306912112873
2010	0.5474714076650894
2011	0.1324531840736999
2012	0.07716453757621755
2013	0.16735354325576407
2014	0.0003345086729178656
2015	0.05960004575496036
2016	0.045970056036675214
2017	1.2122476207213604
2018	0.7146505664415795