Year	% of total merchandise exports
1960	4.009433962264151
1961	2.0348837209302326
1962	3.1546667536619584
1973	0.008189337482597658
1981	4.958177474274512
1982	1.238316214946694
1983	1.3819930492151193
1984	0.3814389574478004
1985	0.10105384726432798
1986	0.2016338552241038
1987	0.06333418793512988
1988	0.10563983844904924
1989	0.6503508610130879
1990	0.8050655955168243
1991	0.28868816606947795
1992	0.6811919058978366
1993	0.6452252627079496
1994	0.37474107520325506
1995	0.19546451158071626
1996	0.1698322812407567
1997	0.2332370553487
1998	0.2656499678091206
1999	0.445891760126141
2000	0.5813748295761322
2001	0.4736619385547909
2002	0.5391945393486423
2003	0.33141391280283466
2004	0.6028367829986339
2005	0.5605904351101332
2006	0.6151502848746353
2007	0.6686027070163836
2008	0.9111187968498647
2009	1.0709967416187076
2010	2.055161646466615
2011	2.4106080003371857
2012	2.161257391882542
2013	2.452291179326255
2014	2.4808921992036788
2015	2.293853980070011
2016	2.2209841644878936
2017	2.5233860559970402
2018	3.3123028254335067
2019	3.0721716243099033
2020	2.343230714510973