Year	% of total merchandise exports
1981	1.1052799708361243E-09
1982	0.5447068171635985
1983	-1.5632384133631793E-08
1984	0.24907078472446836
1985	0.3413492754795112
1986	0.2533505445780296
1987	0.2545306441644209
1988	1.343354044733818
1989	3.767326709917303
1990	7.0407507288378675
1991	5.703534097889635
1992	6.333448248736952
1993	13.507873800708575
1994	0.498980576455472
1995	0.055554532627069844
1996	0.032891570099456466
1997	-2.7149056124168284E-09
1998	6.249490454924335E-09
1999	-1.1806412582481095E-08
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	0
2009	0
2010	2.2801443233033664E-05
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	-1.585213633083262E-16
2020	0