Year	% of total merchandise exports
1969	4.705882352941177
1970	3.7037037037037033
1973	3.0534351145038165
1974	2.2988505747126435
1975	2.8169014084507045
1983	0.11286681715361924
1990	0.006649506062831947
1991	0.010094748147112854
1992	0.015586538452278935
1993	6.765927390510364
1994	6.759605027505951
1995	4.544220801328654
1996	3.810700012076863
1997	10.050913039042298
1998	6.005941063988905
1999	0.16603788527653932
2000	24.595310265409196
2001	2.9799286498020363
2002	29.96014955438082
2003	3.2155112308175733
2004	7.007141422689854
2005	4.8635498699395905
2006	3.8557494684521347
2007	27.00951704036021
2008	43.19569676920721
2009	16.319416949208154
2010	4.30603183857384
2011	7.59509641117631
2012	6.2159790495827965
2013	5.905202356143005
2014	6.596290011923739
2015	13.22632700541943
2016	9.31814960599165
2017	9.177523305451583
2018	9.839371961859086
2019	36.486415862918605
2020	24.720461812647297