Year	% of total merchandise exports
1981	1.2386421227593691
1982	1.2796823729536593
1983	2.146330090974818
1984	0.06392668049968368
1985	2.1238991556608777
1986	0.28566019949013416
1987	0.3098788413122861
1988	0.8179444702391403
1989	6.30820162504474
1990	11.21428465760247
1991	1.8001427215228492
1992	0.715566542298194
1993	0.7240338895119786
1994	1.5962151689622963
1995	1.6067611826521875
1996	0.8423592100876885
1997	9.659902763695829
1998	4.884549422962037
1999	5.024999693506473
2000	2.563337964605465
2001	2.7781194950461794
2002	2.0322324753050895
2003	3.733524026389659
2004	3.6032569049128687
2005	2.594353301392709
2006	2.106326760568391
2007	1.2066363164003795
2008	3.444175907223702
2009	3.231673046171463
2010	3.53985853791542
2011	1.1580760846011176
2012	0.8596042758589528
2013	0.7397465530802784
2014	0.5959030880691467
2015	0.24097460875928445
2016	0.29451979632454967
2017	0.3362307485696237
2018	0.4346021353345093
2019	0.6323583500894155
2020	1.0362796338635072