Year	% of total merchandise exports
1960	0.08168266285480906
1961	0.1376327172630751
1962	0.1128031584884377
1963	0.1292466765140325
1964	0.064
1965	0.05815644082582146
1966	0.20442930153321978
1967	0.013137151865475564
1970	0.006420906471471109
1972	0.0023379781165248294
1973	0.005688929343497554
1974	0.012507060437343662
1975	0.024687343822443808
1987	0.04594092762389694
1988	0.21967937933623458
1989	0.4642110225940209
1990	0.7720939880383051
1991	0.08706961160340343
1992	0.13622293947055733
1993	0.32876686029209884
1994	0.6675363157704899
1995	0.6552026353168727
1996	0.7328201326273162
1997	0.5510211809227369
1998	0.4564155114377545
1999	0.7031562033478477
2000	0.7385000002591228
2001	0.7021443211625802
2002	1.0751923697436712
2003	1.0573041477047054
2004	1.504810033757954
2005	1.6225145311400624
2006	2.840957589196888
2007	3.4365418518425255
2008	2.128792299994235
2009	2.2563315350005575
2010	2.49535046400078
2011	2.4145048096849497
2012	3.2948546838207413
2013	2.9451096786340014
2014	3.4661915185172427
2015	3.080818540782449
2016	2.348727332846495
2017	3.0718387355558794
2018	1.822697137506998
2019	1.8030700082308688
2020	1.1407681343462335