Year	% of total merchandise exports
1965	0.01633453119895459
1966	0.028616397195593075
1967	0.02097902097902098
1968	0.019845207382417147
1969	0.04748901816454945
1970	0.05319714863283328
1982	0.0021752844184377107
1984	0.022701230190474132
1985	0.0022204212139042773
1986	0.002159407458593362
1987	0.0010062690562202522
1988	0.07465588999208737
1989	0.0072562797053950445
1990	0.0015264728554964474
1991	0.004378044108794396
1992	0.07236168431692615
1993	0.05636978579481398
1994	0.002800718384265564
1995	0.04419825943840192
1999	0.009917265960036423
2001	0.023675440408739507
2002	0.16770050790604032
2003	0.03598203296364546
2004	0.026324792613654915
2005	0.011139101885081118
2006	0.11269253258777893
2007	0.02643737495621111
2008	0.009445985856957224
2009	0.14482611209870583
2010	0.41036649232730865
2011	0.895313374411598
2012	1.7631202099105636
2013	4.068041066404693
2014	1.968766300748192
2015	0.5037110148995723
2016	0.7104730244212644
2017	0.9294065071678554
2018	0.10560776115408617
2019	0.29415846097137804
2020	0.3907487384211829