Year	% of total merchandise exports
1960	0.535475234270415
1961	0.4991087344028521
1962	0.5603625875566542
1963	0.724998223043571
1964	0.6289747711230694
1965	1.0969723562966212
1966	0.9994256174612292
1967	0.7675571135017527
1968	1.2064200680272108
1969	0.8595839717453969
1970	0.9125866847796318
1971	1.3454382579933848
1972	1.0723010136029614
1973	1.493030909208234
1974	1.5595103462070197
1975	1.6226480434029782
1976	1.8268105191643773
1977	2.294979320799486
1978	3.4283044419725974
1979	3.6504799325968333
1980	4.17438818267724
1981	6.014041594913234
1982	4.969172642623328
1983	3.79029386756144
1984	5.128768166200157
1985	6.14429438319522
1986	2.7033035416548556
1987	2.7993975540511364
1988	2.045826441202037
1989	1.7175821845014865
1990	1.9014756943891347
1991	1.9366316384354973
1992	2.0960102847805264
1993	1.7289221138060176
1994	2.05907154131749
1995	1.8175228815246514
1996	1.865983859610172
1997	1.6918204140365256
1998	1.8045245530960843
1999	1.553798499988481
2000	1.4039258945950628
2001	2.09092478053061
2002	2.5616836014222546
2003	2.5702330019752275
2004	2.7297386247021405
2005	3.349760502747554
2006	3.541671082761113
2007	3.636227508962285
2008	3.5340202675531214
2009	3.7218588529837566
2010	2.47711191293366
2011	2.640116733063061
2012	2.7212968612939727
2013	2.5443912578095906
2014	2.2105285677476676
2015	2.1671526860736448
2016	2.0499827474289924
2017	2.0726503457744796
2018	1.61332599200373
2019	1.6128886206120612
2020	1.8045695746020325