Year	% of total merchandise exports
1965	0.12180267965895249
1969	0.0018981815420826848
1970	2.686538086888759
1971	0.23146473779385174
1972	0.8979461063707801
1973	0.03171031868870282
1974	0.001366969906157516
1975	0.30626013918158806
1976	3.4763986270425677
1977	0.0008046800189904484
1982	0.3872755562117409
1984	0.0013532806907144647
1985	0.0004146904455892689
2000	6.198628862241142
2001	9.829404137624186
2002	5.043972471604452
2003	2.4115822478578854
2004	6.384156586430091
2005	10.342044004502256
2006	4.759108633892524
2007	17.085481593992533
2008	17.166778235606586
2009	5.019857352746304
2010	4.61867123285035
2011	23.450704658702843
2012	57.22804981758254
2013	78.04413872022786
2014	82.00106228677194
2015	5.394621803898998
2016	11.688359596207688
2017	28.209570206694096
2018	20.385904138690968
2019	19.99033642512961
2020	2.86488448804019