Year	% of total merchandise exports
1985	0.019964064683569573
2010	0.0001197985886228778
2011	0.0018156325639536305
2012	2.4702917058370873E-05
2013	0.0060181956268024585
2014	0.00019636022460473387
2018	0.12803094363579745
2019	0.0010939423848130242