Year	% of total merchandise exports
1960	0.5188067444876783
1961	0.43415340086830684
1962	1.01763907734057
1963	0.38997214484679665
1964	1.3663967611336032
1965	2.768361581920904
1966	2.76125743415463
1967	3.23167956304051
1968	2.9141410777326318
1969	1.855215043692839
1970	1.6944858191422385
1971	1.2827315558372834
1972	0.9075892102941453
1973	1.2207969808751589
1974	3.269857894361001
1975	3.1688828769046227
1976	1.6359009327131482
1977	1.4365320379587867
1978	3.0420144366786825
1979	3.3635439544132484
1980	4.81490400145657
1981	7.081696170800061
1982	5.192073334647574
1983	6.9658467222871545
1984	5.599063415877331
1985	2.146524716222455
1986	1.7721599758684599
1987	5.038270583367812
1988	5.834835970218706
1989	3.608581306237757
1990	2.0193542014036736
1991	2.4021766585746476
1992	2.7380971335217055
1993	4.846228847195435
1994	5.455212636482524
1995	6.176670694959193
1996	2.604071990016795
1997	1.7269478414542079
1998	1.7171810947354018
1999	2.535558842683104
2000	1.8276966538145436
2001	2.2926083082834943
2002	3.6995777943386954
2003	2.5910401315462317
2004	2.44608574352514
2005	4.92287520853079
2006	3.50953392609103
2007	5.769511758882025
2008	5.0216793471782495
2009	4.899576055086291
2010	3.2802547672150273
2011	2.123955264172093
2012	2.4934161697858186
2013	2.6966272835299065
2014	2.2837992811187675
2015	10.872619948992954
2016	5.727303836756282
2017	3.4146737160997205
2018	3.6967654571384503
2019	9.310922788894336
2020	13.323590358674425