Year	% of total merchandise exports
2003	0.40921697394989903
2004	0.572038982872332
2005	5.1613541905508695
2006	15.961164171246345
2007	15.944476754490926
2008	9.944303750385338
2009	12.429142917923826
2010	11.621684026476926
2011	9.889357701804096
2012	0.9093915193675429
2013	0.5668368587060582
2014	0.001840602771565414
2015	0.0028752327811723214
2016	0.6668926055314778
2017	0.19484039165410677
2018	1.5880998305309775
2019	0.39202488270536856
2020	0.6462253404762909