Year	% of total merchandise exports
1975	1.2082158679017316
1977	0.1131527808525816
1988	0.009315623324505409
1989	1.1813628643954448
1998	0.20012500431744137
1999	9.14845501615985
2000	0.044552092910853956
2001	0.6982105108679268
2002	1.6133053060228146
2003	0.7676338011891815
2004	0.15928462776279015
2005	1.786174052302814
2006	2.41910486444498
2007	0.19774741536566146
2008	0.3532839937087889
2009	0.4784775189050814
2010	0.4997518948091559
2011	0.2014825475106285
2012	0.09759608366597447
2013	0.4554224259453679
2014	0.9110325555704126
2015	0.14054333313557182
2016	26.858352156584452
2017	0.7951412680274109
2018	0.37539264767371405
2019	0.7028438223233561
2020	0.2806791752601911