Year	% of total merchandise exports
1987	0.5181807345217756
1988	0.4306447270779993
1989	0.2911211221836971
1990	0.6699201314667657
1991	0.2839508326230809
1992	1.1590975211848324
1993	0.03665889345902062
1994	0.054040587938724745
1997	0.38236755352461005
1998	1.3066415974836856
1999	1.0300180359656144
2000	1.8332849873608286
2001	1.3893004807871807
2002	1.3112039974240497
2003	0.518652056085852
2005	0.012680380506822943
2008	0.055495210903680176
2009	0.21181967406647653
2010	0.14477527067850027
2011	0.2401446710899942
2012	0.5354644797075554
2013	0.6240368591363543
2014	0.7770699135501193
2015	0.7901542996566153
2016	0.20013817800708517
2017	0.021420260244028225
2018	0.060930877534122053
2019	0.024200265879447153
2020	0.02327078448095968