Year	% of total merchandise exports
1960	82.03083080175415
1961	81.40970481499495
1962	80.55003275835612
1963	77.69058429025117
1964	77.53231467764728
1965	77.80422823731347
1966	78.14486937009615
1967	77.28594791891084
1968	73.66855208748842
1969	75.35394642692272
1970	74.3097422591301
1971	76.78258662034982
1972	74.7328093109666
1973	74.19248949579831
1974	77.14664250667491
1975	74.10261530449594
1976	74.77886411658274
1977	75.81583394807048
1978	79.57556047434741
1979	77.85464925780364
1980	65.99811563897134
1981	65.86429364757599
1982	69.04337152315286
1983	69.71571659809067
1984	69.35269593418141
1985	73.98843723302188
1986	70.88742654766762
1987	70.08562344009088
1988	70.3779086383544
1989	70.27118907136037
1990	74.04430273616313
1991	73.84272146563762
1992	75.45645855943881
1993	73.11222465735979
1994	71.81119468298031
1995	70.13585532123614
1996	70.11108364894577
1997	74.00292747207786
1998	73.02635015251326
1999	72.75448069013844
2000	67.3480963323526
2001	66.83633376102019
2002	62.63730029681365
2003	65.03125430142234
2004	62.518327328741044
2005	62.24095757275118
2006	63.63095161894492
2007	58.23003973431532
2008	57.425204405741184
2009	57.45215929241538
2010	56.072987196041645
2011	54.85633958508891
2012	52.02158948623757
2013	46.88535938035288
2014	44.30747796291268
2015	44.78047161528561
2016	44.918503328024194
2017	44.03784747336174
2018	41.05561215882645
2019	41.55603304927983
2020	39.10724971090938