Year	% of total merchandise exports
1990	1.0054943795834237
1991	0.49657986178897023
1992	6.6848934515477145
1993	4.566808429320897
1994	3.382730915943738
1995	3.802518694634659
1996	3.6431401860748975
1997	2.2465213373874278
1998	3.157899391633739
1999	1.4517718477855257
2000	0.43472131259529356
2001	3.762300870916715
2002	2.2445889500901823
2003	1.5100809295399098
2004	3.437955657052702
2005	0.804638077881271
2006	1.2773564550606153
2007	5.038268372372988
2008	3.668051557108446
2009	7.316260902561143
2010	1.1853441847373818
2011	1.5309071583232075
2012	3.3585194569632866
2013	1.9011952172883533
2014	4.364342152233685
2015	21.097016210581522
2016	1.589715835102752
2017	0.5155451589271381
2018	0.9080566720744381
2019	9.072994201593435
2020	6.599299593291294