Year	% of total merchandise exports
1981	0.8930849707637847
1982	1.4467941454618116
1985	0.00199063405500664
1986	0.18300391911310956
1988	1.5703696985308147
1989	4.351107683203954
1990	4.927299210333676
1991	17.060114878864276
1992	3.6482765177324503
1993	1.199212417566244
1994	2.3599242018553634
1995	4.075384493885378
1996	6.68954809329036
1997	12.565129040410536
1998	8.388611626218465
1999	5.966094229630327
2000	0.9698752859969592
2001	1.2141126197477032
2002	3.0426555989642856
2003	4.370096387015591
2004	16.36826413787893
2005	9.422470147143311
2006	11.713719895666454
2007	4.203308293756206
2008	1.2406182541151893
2009	2.985459353548602
2010	17.236146012644245
2011	6.8596796333307815
2012	6.9110562416778984
2013	3.5259997442409747
2014	3.6589807674788455
2015	4.441068170519053
2016	7.779259014096988
2017	20.38425277457566
2018	5.584325460496273
2019	34.941900698419815
2020	30.139726014874967