Year	% of total merchandise exports
1973	2.329254779923144
1997	0.16252892318700088
1998	0.327097234591399
1999	0.12844789270474485
2000	0.043374640641536025
2001	1.6301058752791209
2002	0.8171777752664049
2003	0.060407998066600826
2004	0.3390621242734877
2005	0.3170976467142937
2006	0.4090542111446564
2007	0.4836660914085214
2008	2.8471314117771835
2009	1.151064438330354
2010	1.052410261959697
2011	1.2621658720339748
2012	1.9113265715610868
2013	0.010972883802346243
2014	0.8887438609717986
2015	1.5548796379884517
2016	0.03017943430800399
2017	0.6564742242123931
2018	0.9125803591167522
2019	13.223455522805743
2020	3.187651511120368