Year	% of total merchandise exports
1979	0.2601255194715532
1982	0.002710190315586606
1995	0.01870635184169634
1996	0.01069061364113336
1997	0.06148581813166208
1998	0.008222940362199041
1999	0.03363055471189961
2000	0.009285122219336625
2002	0.0447708441650449
2003	0.20648878047697566
2004	0.18589868859819614
2005	0.17016276762980176
2006	0.4236256363502225
2007	0.35928367727034116
2008	0.07169453009342797
2009	0.08388366691147488
2010	0.04206950261010427
2011	0.26994035293928403
2012	1.224114561741805
2013	1.1463465168821243
2014	1.5942917250992437
2015	1.5023148398773132
2016	2.688764094171531
2017	0.0074508278904221875
2018	0.426679142294629
2019	5.795469037868682
2020	0.35971341699970183