Year	% of total merchandise exports
1979	0.007692159766158344
1980	0.01732119799703965
1984	0.010120740433370105
1985	0.040272420551463683
1987	0.6057835181163562
1988	2.3710729104919976
1990	0.6602209079531065
1991	0.1119928133326915
1992	1.1377549691968043
1993	0.06325279144375667
1994	0.017979623099981933
1995	0.03694808793861758
1999	0.0025829364753865705
2003	0.0044391667997569
2004	11.124051380625328
2005	7.552534975912471
2006	8.594527698856593
2007	8.160432778965069
2008	10.074954937523648
2009	10.966009302462211
2010	0.1349909277873971
2011	0.41278564570989906
2012	0.0799219223642891
2013	0.055337416172120756
2014	0.15907174272346866
2015	0.13099549888215223
2016	0.1967816145768181
2017	9.440596390975678
2018	8.06449231843249
2019	6.325173720322688
2020	4.587990327162444