Year	% of total merchandise exports
1960	4.313039239613704
1961	4.217677545440655
1962	4.060988937004243
1963	4.331125541593284
1964	4.444370122098343
1965	4.357208173450814
1966	3.941502862990809
1967	4.107670934433488
1968	3.871907154791416
1969	3.654224944522861
1970	3.8436359408506835
1971	3.7960926592855104
1972	3.318836180346177
1973	3.340433939279789
1974	3.531003238270456
1975	4.029479211630357
1976	3.7976641868520704
1977	4.072271504460039
1978	3.7426766912276768
1979	3.1736113676767874
1980	3.7981002829141137
1981	4.121558000420939
1982	3.7047569858841056
1983	3.037093938101493
1984	2.829856731814777
1985	2.560995121242216
1986	2.2352529392160596
1987	1.9962209350848525
1988	1.9883981215296946
1989	1.8772134389783666
1990	1.6866724082607039
1991	1.651992395589345
1992	1.6505789065710839
1993	1.504413814342507
1994	1.2892782991252376
1995	1.4248765017299516
1996	1.3772402087042435
1997	1.2974607794657806
1998	1.4168667878582757
1999	1.2514102243464704
2000	1.2645359154992775
2001	1.3002506384683084
2002	1.2522273962648294
2003	1.271974447140339
2004	1.2429744421606423
2005	1.3001477465083933
2006	1.3415428765830337
2007	1.3949306209035097
2008	1.476214868511174
2009	1.6093262836513016
2010	1.585839599307444
2011	1.6972563079877736
2012	1.7121834416653312
2013	1.788005513221575
2014	1.7735000547338946
2015	1.6786767705970798
2016	1.4587334031131167
2017	1.4555570399354305
2018	1.4484031278438425
2019	1.4445051214263653
2020	1.3634011153181695