Year	% of total merchandise exports
1970	0.005319714863283328
1988	0.004470412574376489
2001	0.06717295063116642
2003	0.3596367780449007
2004	6.264530864090661E-05
2006	0.006693566320870444
2007	0.10208524884426369
2009	0.023724400394281062
2010	0.01045705193107354
2011	0.08759735335069815
2012	0.046263972434455736
2013	0.11797923737498898
2014	0.07371227807899706
2016	0.033967989646956034
2017	0.04354630696274649
2018	0.04359429319995007
2019	0.009636219862090884
2020	0.0028972812272645377