Year	% of total merchandise exports
1964	3.6585365853658542
1978	0.0009413182220381422
1983	0.00916161090795757
1989	0.038584284305651965
1990	0.13644420847465333
1991	0.0010744516152366977
1992	0.47819055697424556
1993	20.164642975053894
1994	7.228414393582935
1995	9.070474463680972
1996	2.538298789788666
1997	5.097748958180119
1998	9.264404115126897
1999	3.9439832890664293
2000	0.020902453810714098
2001	0.5538199436216354
2002	0.12761334970837276
2003	0.004901732827621814
2004	0.09624667279078344
2005	0.21122746306381546
2006	0.7893812766868806
2007	0.42157658942043347
2008	0.022778515447022418
2009	0.02231240894554963
2010	0.02922949188176491
2011	0.0128630723801401
2012	0.0354203060513715
2013	0.04999403389151986
2014	0.3465845981793056
2015	0.010142756474910591
2016	0.0038139397362949457
2017	0.007776406677773876
2018	0.017185083869139882
2019	0.015551333749629003
2020	0.015266439912279687