Year	% of total merchandise exports
1981	0.8943061359487376
1982	19.465097909567362
1983	0.015330369460370993
1984	16.212587493930865
1985	2.5447858606149865
1986	0.10387373008060657
1987	0.01527183872910081
1988	0.06584381658071473
1989	0.008640545427285007
1990	0.07678848893055822
1991	0.04403602353684759
1992	16.198069245112254
1993	24.091742018939172
1994	13.205513469146466
1995	26.577024618141614
1996	21.135821963941986
1997	8.780185856842724
1998	2.5466855000015927
1999	2.031327749318914
2000	1.827234520857528
2001	2.3643848040654514
2002	0.005982345906476151
2003	0.023858903730069728
2004	0.8331882528621711
2005	1.5347884663386249
2006	2.250713803066112
2007	2.471526739224321
2008	1.2326928610684695
2009	4.1738251368972055
2010	4.570535929319587
2011	4.657479094068025
2012	2.027391548086689
2013	5.586885979262521
2014	4.793495318005077
2015	3.5970946685980625
2016	3.803194461078021
2017	3.0779752529603277
2018	1.1999902140400551
2019	1.3854486854512886
2020	1.3136200622673582