Year	% of total merchandise exports
1969	2.3529411764705883
1970	1.2345679012345678
1973	2.2900763358778624
1974	2.8735632183908044
1975	2.8169014084507045
1976	0
1977	0
1981	0.6653359727585663
1982	0.2932551322365576
1983	2.6382363496759575E-10
1984	-1.050766695294509E-08
1985	29.342492637925137
1986	22.157149827705506
1987	40.64652889049691
1988	8.77064266155736
1989	13.869717711706631
1990	-6.23061647353612E-10
1991	7.146240266076041E-09
1992	26.806161118478546
1993	6.084901806733917
1994	19.167654687835302
1995	12.46155585309262
1996	11.136809504649282
1997	7.464668230692906E-11
1998	-1.8433160216279012E-08
1999	8.678564833807168E-09
2000	0.019531067964181303
2001	1.5027196324797218
2002	0.3574291490365433
2003	0.017249794308144942
2004	0.0501615232079613
2005	0.01699973592086325
2006	0
2007	0
2008	0
2009	1.1743625110064198
2010	0.15489099063067852
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0