Year	% of total merchandise exports
1968	0.0023440201116925585
1969	0.0005045637793845331
1982	0.00022258429267163477
1983	0.000254220052877771
1985	0.0005947911167946706
1986	0.055751631945528936
1987	0.13461028829768001
1988	0.0040812816186465515
1989	0.0040452770579479025
1990	6.500938529660629E-05
1991	3.067421121794983E-05
1992	0.020418076299041073
1993	0.029905139268090384
1994	0.027077363769240293
1995	0.09059705167385701
1996	0.018921539254221412
1997	0.029400204386447602
1998	0.08400786186782763
1999	0.04646509496526147
2000	0.0611603086895808
2001	0.04833490830371279
2002	0.08389584775554182
2003	0.03600303820450617
2004	0.12728613749390444
2005	0.052193467400711145
2006	0.025754890801519187
2007	0.014405213854243436
2008	0.010144845770808304
2009	0.05761343756267212
2010	0.016797520847598408
2011	0.08185255589274658
2012	0.010472401014079001
2013	0.030418581068737644
2014	0.007224896002172956
2015	0.01081705796941825
2016	0.007852505531015925
2017	0.0058572893092063896
2018	0.005764205292554093
2019	0.010197168422534184
2020	0.01206234615295658