Year	% of total merchandise exports
2002	6.681360149626346
2003	12.940438352233194
2004	22.71589260109842
2005	5.49673105041076
2006	10.069424921125792
2007	6.442108270549395
2008	2.230646551406619
2009	3.6482037576695943
2010	68.69589430902062
2011	2.812318059358861
2012	27.311975207619316
2013	2.149889265205606
2014	0.20719507082461805
2015	37.386676342248236
2016	4.9813529559327705
2017	3.4684874761268762
2018	33.72580844667381
2019	2.055159954787454
2020	81.54656084352733