Year	% of total merchandise exports
1960	3.410944683375352
1961	3.05751550138978
1962	3.263162426277498
1963	2.530368020761994
1964	2.3007422832767945
1965	2.6746370623398805
1966	2.6502602934216752
1967	4.57147764355642
1968	1.7580232888383982
1969	1.6061793255041665
1970	1.5832315491826594
1971	1.394487833609987
1972	1.0932963629971153
1973	1.0449867145901561
1974	3.452764736003231
1975	2.1935390670340906
1976	2.16797864767061
1977	1.541955641572901
1978	1.2686908440847549
1979	2.381407307620878
1980	1.486198516476541
1981	1.7942074407404165
1982	2.299944731799856
1983	1.1449862695522786
1984	1.4682924011756049
1985	2.1105100767663125
1986	1.7778889253961518
1987	1.540015623128558
1988	1.8673604271461461
1989	1.8245508819630416
1990	1.7935411910763792
1991	1.8613153233699626
1992	2.0031232935549714
1993	2.1403635325182755
1994	2.0349266299585342
1995	2.1351865325274724
1996	2.5087450153740565
1997	3.1227714486735696
1998	3.311994317903957
1999	3.072080867504239
2000	2.5768928418039287
2001	2.9025441192850647
2002	2.972624341250258
2003	3.8100259692578784
2004	5.519514040086394
2005	5.678892188719471
2006	5.972620194169977
2007	5.9922118328056095
2008	6.53049053945575
2009	8.139444448783536
2010	7.699322582032081
2011	6.321008965629292
2012	5.508541572104295
2013	4.109188938407354
2014	3.793710317730756
2015	4.908513314727168
2016	4.2737534897823695
2017	5.722492137065999
2018	5.101246480847455
2019	3.9918408314806255
2020	3.4108865482707014