Year	% of total merchandise exports
1965	0.0202552157180474
1968	0.02258993618343028
1969	0.07672143724825779
1970	0.027179452334035466
1971	0.21811502697738494
1973	0.04817729243616509
1975	0.006165481524107033
1976	0.05408174883297279
1977	0.10527202290719219
1979	0.017266087677193225
1980	0.1845748187211602
1981	0.19086639261921323
1982	0.01090791715590232
1984	0.138941014429584
1985	0.03666435551471772
1986	0.5886119437780106
1987	0.07669093756816425
1988	0.011732413107138148
1989	0.13170865756430641
1990	2.6052682065698063
1991	0.9853964858760248
1992	0.4168359728425851
1993	6.349552088881083
1994	14.516835703673008
1995	6.06796940767528
1996	8.519107192808946
1997	15.284137176145324
1998	6.182574341878549
1999	4.722968417730802
2000	1.5822503130558763
2001	5.087353502272986
2002	1.78926765152869
2003	12.22330087814779
2004	3.012020771497831
2005	7.909807089914915
2006	9.481241281596226
2007	4.207832166805282
2008	22.418524296463556
2009	17.58157725542213
2010	11.8414289037866
2011	6.576355653329942
2012	11.067414107655276
2013	9.275273658210796
2014	13.942682295654981
2015	10.794129684270807
2016	44.320713574241395
2017	29.71601017491367
2018	20.105510963095263
2019	24.351856039638516
2020	15.385401506476203