Year	% of total merchandise exports
1961	0.15723270440251574
1962	0.1838235294117647
1981	0.07662835247395076
1982	0.018577001670735498
1988	0.011908901050309983
1989	0.3473767777793506
1990	0.7619957481960993
1991	0.19393624557775022
1993	0.059492389070193885
1994	0.0077931930072808455
1995	0.03316837798869322
1996	0.07436719794302102
1998	0.0096411355115158
1999	0.030767455723708245
2000	0.043924825826064204
2001	0.08392783275353961
2002	0.10404935812724704
2003	0.10329186359902033
2004	0.13910121640754894
2005	0.19959159997562764
2006	0.3129467108094067
2007	0.47545696285350564
2008	0.7707874730658772
2009	0.5166207264603668
2010	0.8231127392893263
2011	1.1760817883153134
2012	13.624359150469372
2013	2.02963737794221
2014	1.1427385452447463
2015	1.2593739392830978
2016	1.1108947425581994
2017	1.0676861107254882
2018	1.0680516732269836
2019	1.005428950532326
2020	0.9289560640105606