Year	% of total merchandise exports
1971	0.058379388184011824
1975	0.0017750810889315626
1978	0.012359035515625418
1979	0.0031418547415824473
1980	0.001186206787475238
1981	0.022454056958185645
1982	0.05644658809229468
1983	0.0060526581256935335
1984	0.007607408592550948
1985	0.10499924536208581
1986	0.06802620528964409
1987	0.10510225333525164
1988	0.14424873618720171
1989	0.027041748125672935
1990	0.004363999242900787
1991	0.003735441428319909
1992	0.003321828733154176
1993	0.009312279238452233
1994	0.031611749220956005
1995	3.0999451774695364E-05
1996	0.20180386984194532
1997	0.319930022337956
1998	2.147003608751071
1999	0.628583645607034
2000	1.5472365403804504
2001	1.3061672855384054
2002	0.5453888123744582
2003	1.1408801455231254
2004	0.24171009205894542
2005	0.0474497707135037
2006	0.1668124779999453
2007	0.2917444645528872
2008	0.07143334926226813
2009	0.10231111970530674
2010	0.4658604361116917
2011	0.4032157016848139
2012	0.24548666154133944
2013	0.5332224131957608
2014	1.91444477963885
2015	1.7896431945920899
2016	1.059723393561474
2017	0.6727572190626224
2018	0.5591254784531642
2019	0.3957697029762632
2020	1.369097289354465