Year	% of total merchandise exports
1981	1.751684634984467
1982	2.489000218868408
1983	3.871636870746738
1984	2.3779125430840464
1985	1.6245912422348396
1986	3.2754109501734257
1987	4.1723641188559295
1988	3.969252593106244
1989	5.226458231434268
1990	6.355425030024225
1991	6.563896428148749
1992	4.697780204053879
1993	8.850526598515067
1994	3.841902298654397
1995	1.6646163854186502
1996	2.2258191168721853
1997	2.2494040342758823
1998	0.6317590361445784
1999	0.5006496191116417
2000	0.6322651590119502
2001	0.42422550449483387
2002	0.613069617593545
2003	1.2435868031960298
2004	0.8344677987732724
2005	1.2233175674876857
2006	1.1755299909556811
2007	1.0319519964381951
2008	1.2502416236403235
2009	1.4170123761992341
2010	1.7400120210484427
2011	1.8018920844294084
2012	3.3374475228805225
2013	3.647527924711917
2014	3.043899917115484
2015	3.085889837021774
2016	2.8994359824693934
2017	3.0886366079656247
2018	3.3106107290809406
2019	3.7415991853369697
2020	4.312204234268884