Year	% of total merchandise exports
1975	0.9361178544112267
1976	0.07319920074386214
1979	0.015384241678339797
1990	0.9408440003053724
1991	0.0009317101587900915
1992	0.05068328683826606
1993	0.0022783210748613275
1994	0.01190154523447223
1995	0.06978539516493813
1996	0.057652336195020255
1997	0.17341233440782133
1998	0.01067151420085694
1999	0.11324106715367047
2000	0.16870810268124603
2001	0.14569614039312626
2002	0.0782749021286566
2003	0.05559667307262323
2004	0.015633318202482167
2005	0.00012531513334275104
2006	0.4377186304147291
2007	0.1698560022904067
2008	0.029170851110979123
2009	0.3305254239443743
2010	0.1372842481717914
2011	1.786616077207925
2012	0.8997239183553172
2013	0.4736920652129774
2014	0.2418228339355507
2015	0.9614882852993202
2016	0.9818951685296115
2017	0.720268662941982
2018	0.4895634452239777
2019	0.47034565902428366
2020	0.6071092111873467