Year	% of total merchandise exports
1963	0.6493506493506493
1967	0.07051698629758169
1968	0.001393572842052454
1969	0.03470526234607573
1970	0.04329292660183828
1985	6.239153722549545
1986	4.097629274543771
1987	2.12671470609546
1988	1.2808017371310443
1989	0.00930805778245726
1990	0.3165830690904478
1991	0.428204758669844
1992	0.37327444060004544
1993	0.07982511834953375
1994	0.3381813840496788
1995	0.5026002144448432
1996	0.8696679067216023
1997	0.6907484184210647
1998	0.6238719105837218
1999	1.154710773210752
2000	0.7133651735420563
2001	0.9377752713810182
2002	1.2449619921021182
2003	2.6220888683774755
2004	3.7055585194737444
2005	0.30927795955073784
2006	0.1885128593172446
2007	0.4776888951129899
2008	0.23244436887935918
2009	0.4058644785545489
2010	0.3322252745257685
2011	0.1782517171271713
2012	2.9486574828938226
2013	2.5902103917197397
2014	3.288966946451599
2015	1.2147319120781375
2016	0.9336346645968139
2017	0.5301621031153949
2018	0.9069217568926445
2019	0.3323941513087424
2020	0.291491549635297