Year	% of total merchandise exports
1969	0.0028179306807838735
1970	0.0004052573221892973
1971	0.0005366505492618371
1972	0.0010334214578415716
1974	0.0002672585278084554
1975	3.400421958360813E-05
1976	0.00023132526553056143
1977	0.0034600673482565025
1980	0.20420586813887656
1981	1.6667058627819188E-05
1982	0.01916946489787312
1983	0.014014224980968956
1984	0.04590678336465325
1985	0.08423822759902316
1986	0.026019451312911314
1987	0.0006811374024328683
1988	0.0006253617111233003
1989	0.00028506967179719913
1991	3.868489719194607E-05
1992	0.00014179957743039152
1993	0.04104643085866607
1994	0.7215884273566944
1995	0.6356366444542189
1996	0.9806865605293641
1997	1.2114618023838089
1998	2.0647888477508607
1999	1.3088264154580973
2000	1.3026850625674773
2001	0.41305220984903845
2002	0.233845675317579
2003	4.953817902215585
2004	4.572493409114794
2005	5.570806601378575
2006	5.822793098702293
2007	6.0017509835663585
2008	5.9614646031411205
2009	5.5127869697836696
2010	5.891321801652529
2011	5.4687539070818785
2012	4.240468694770726
2013	2.8884237416576934
2014	3.0898526953430183
2015	4.095427829984284
2016	4.016132482571055
2017	3.8892990151323388
2018	3.419491981105032
2019	1.22847590888561
2020	1.2811988363847857