Year	% of total merchandise exports
1976	0.0006654400388616983
1979	0.003433721255791103
1981	0.2971958695601501
1984	1.800562041892401
1985	5.619174238473348
1986	5.616864471669219
1987	4.4826863101160495
1988	4.595223855092276
1989	2.994788323918124
1990	2.5430035516544125
1991	1.478722940924317
1992	1.1610221051117877
1993	1.8555796427263154
1994	1.356623568610513
1995	0.6822345361506854
1996	0.5415197606315464
1997	0.49218606932929587
1998	1.0723887381813588
1999	0.9070154019393022
2000	0.6908342482349744
2001	0.34668939876706856
2002	2.515248472348759
2003	1.2943995214902109
2004	1.4038528288621508
2005	0.31067112806987174
2006	0.7561224427901465
2007	0.48185352866939973
2008	0.8411616277771216
2009	0.5145510273158914
2010	0.4953771914821478
2011	0.586721632702969
2012	1.5153148645524657
2013	2.2519610243667594
2014	1.144640433740274
2015	4.154843715294493
2016	4.099923739002423
2017	4.065428952860444
2018	3.871820745380392
2019	4.048550053420616
2020	4.170517788058793