Year	% of total merchandise exports
1970	0.14158623781768412
1981	0.02630508554891345
1982	0.6972017214264403
1983	0.06543980723655031
1984	0.0461961079784298
1985	2.035709757298899
1986	0.036413012519284374
1987	0.10443599408173894
1988	0.09706432525004655
1989	1.038813891890599
1990	2.6874429344059823
1991	0.5934313048831377
1992	0.23755032658867634
1993	1.4526205724275452
1994	0.8468829957401953
1995	0.009727188955927517
1996	0.3247721038736592
2000	0.0485491907523363
2001	0.04336175571644967
2002	0.010915892022601521
2003	0.027108078515484673
2004	0.0162661146887538
2005	0.15932856322955505
2006	0.27288026927698256
2007	0.055005270554228505
2008	8.082993058033718
2009	1.996954919521348
2010	6.726949246957635
2011	1.7953560188961277
2012	2.3108030252010567
2013	2.226396979705496
2014	12.003271510775686
2015	14.754228823871976
2016	8.726968636343239
2017	16.421994220703297
2018	13.070407917771156
2019	9.430583310992976
2020	16.18200339653547