Year	% of total merchandise exports
1960	0.1526030261180079
1961	0.12218300298669563
1962	0.09786103732699566
1963	0.14207897367091296
1964	0.131701013412958
1965	0.05548259038808135
1966	0.06610037738908797
1967	0.05800166420159594
1968	0.03797882127027263
1969	0.015060424724894498
1970	0.05286456774969459
1971	0.01998230657581378
1972	0.014976651014850486
1973	0.04474121354992909
1974	0.014745915321826794
1975	0.016170418085929263
1976	0.006975994700168441
1977	0.03481308638144716
1978	0.033387701513714334
1979	0.04299866543938774
1980	0.07716854689303823
1981	0.0799925363961778
1982	0.07265447634477062
1983	0.0665930898275148
1984	0.07990416306834798
1985	0.11487808307817668
1986	0.4265816370503254
1987	0.16256897548363178
1988	0.43434698326777166
1989	0.519685121658086
1990	0.6928027179356612
1991	0.5961527510263936
1992	2.6522288739781845
1993	3.537329728102219
1994	2.3278892147269317
1995	3.015539073596177
1996	4.216066196236923
1997	3.8194187959830024
1998	4.6426736450436845
1999	8.752661933127296
2000	9.676543060504274
2001	7.0471781737389865
2002	7.14324050893544
2003	5.931831842508628
2004	6.7075998201281655
2005	6.838835939065087
2006	6.17380601015596
2007	7.862905793894297
2008	12.867706515408528
2009	10.512725295018678
2010	13.737933154450085
2011	12.971038444066235
2012	13.680878878913733
2013	14.223339033573708
2014	17.945431653114944
2015	19.434161161271344
2016	18.117443732309592
2017	18.078354396910328
2018	20.054814635967983
2019	19.527345118682682
2020	13.683893736704892