Year	% of total merchandise exports
1960	0.3137386439908454
1961	0.2137992183138425
1962	0.20495803346901437
1963	0.2551978515391074
1964	0.3058447609721808
1965	0.4038905124414358
1966	0.34117701385119786
1967	0.40737080548650056
1968	0.39907851305326786
1969	0.31292732839212517
1970	0.41739424818720333
1971	0.6322069397235109
1972	0.6358341303636357
1973	1.271382483967145
1974	2.061588163192991
1975	2.403833266335313
1976	1.4479721571765696
1977	1.6785216791695783
1978	1.414665961556158
1979	1.1399372834046502
1980	1.5502188093246474
1981	1.8682400111590909
1982	2.0562124456987094
1983	2.6299155507799794
1984	2.297703787077604
1985	2.3043676391172134
1986	2.0029972952857866
1987	1.5900798851245301
1988	1.8239727698977688
1989	1.6548435534924733
1990	1.7811750426505468
1991	1.3661737764823556
1992	1.3391558173490437
1993	1.0991879036242063
1994	0.888834000465796
1995	1.127161012721707
1996	1.1407478753876108
1997	1.2129036501269543
1998	1.0584827707394622
1999	0.8339307204230267
2000	0.7063195431810658
2001	0.9202942219415647
2002	0.9931292016262152
2003	1.0032091969397843
2004	1.1471795882683473
2005	1.0637837570451936
2006	1.118696346340831
2007	1.175799270041689
2008	1.2722748565608357
2009	1.4842347787569727
2010	1.5656963859841893
2011	1.5712326495759252
2012	1.4448519225113057
2013	1.398634437192206
2014	1.3911544828582632
2015	1.370948606880723
2016	1.52700202138684
2017	1.6196890912848168
2018	1.5990856996292608
2019	1.3640537131812653
2020	1.3450233263638327