Year	% of total merchandise exports
1986	0.04160020685375366
1992	0.00044797046986260483
2000	0.00015847042235404908
2001	0.00034418741587265275
2004	0.002374855424058231
2008	0.003042641329282796
2013	0.0024761081181509997
2014	0.009623547425446702
2015	0.003529991412820651
2016	0.003662283612251184
2017	0.04353283529263337
2018	1.7435178838295777E-05