Year	% of total merchandise exports
1960	79.23278461614514
1961	76.57045114389565
1962	78.60863575702786
1963	75.93266769996035
1964	74.29550263661707
1965	74.00512382578992
1966	77.31818898879949
1967	71.77248525791494
1968	78.0204487361545
1969	77.79109483587648
1970	76.69763414593338
1971	77.26116622937528
1972	80.59533295564634
1973	81.05696758693959
1974	72.72577295051819
1975	72.53477771907885
1976	76.59760690410218
1977	75.5066938478819
1978	76.3002868585524
1979	73.79943514164007
1980	71.47799198389525
1981	73.6350598749014
1982	72.04447528479419
1983	75.39876365483953
1984	74.81155079569302
1985	74.71347987099688
1986	74.5784408797393
1987	78.01696246908708
1988	79.1969828255825
1989	76.78875660927964
1990	77.73410597387704
1991	78.94370376346029
1992	77.8178794200304
1993	75.83007259737525
1994	74.1145167093915
1995	74.24918294472104
1996	70.95094179037989
1997	70.39068815962096
1998	73.8949445240323
1999	73.20404153097114
2000	72.7689279119847
2001	72.49409323257265
2002	72.28993462571694
2003	71.47838691777129
2004	68.03403945142752
2005	66.02999737498334
2006	65.12165682056921
2007	64.07775119727468
2008	64.1231134904344
2009	56.45557184558909
2010	54.009204908931984
2011	52.83878940593475
2012	51.82894001133972
2013	46.36957465066475
2014	47.81574287993883
2015	48.18541934015323
2016	48.57845188172746
2017	46.66181119014702
2018	47.458471246839316
2019	46.43491280532993
2020	47.003978159596386