Year	% of total merchandise exports
1960	69.19696364362765
1961	69.31874222107413
1962	70.44955658969181
1963	71.6668693501966
1964	71.69830949284786
1965	71.79717122134642
1966	71.2227974662889
1967	71.4595842321485
1968	73.13937997335542
1969	74.05468938358916
1970	74.83898961195858
1971	75.3584267892694
1972	74.85161613272311
1973	75.41074226624161
1974	74.0431146921511
1975	72.56440344550938
1976	73.12685718844106
1977	72.46656237420865
1978	73.11371200089386
1979	73.29987074604503
1980	72.55785948652031
1981	72.74216974075227
1982	74.35319244570407
1983	75.37526628060488
1984	75.85369043021315
1985	76.21115334529969
1986	77.02923227099649
1987	76.82294392992401
1988	77.04250650510699
1989	77.37988076427172
1990	77.9263962164187
1991	78.5202332438748
1992	78.39990749644528
1993	78.23951191939072
1994	78.97698459904645
1995	79.09630517715536
1996	79.07430666379126
1997	79.65180932295868
1998	80.50113245476548
1999	92.88621449628212
2000	93.34500646083131
2001	93.17932181185091
2002	92.5809523865527
2003	92.18664113650338
2004	91.52966695040182
2005	91.2552289795687
2006	90.60963292079582
2007	89.73046516085766
2008	89.6411141402706
2009	89.14264052585862
2010	89.01106809318603
2011	88.88202606749627
2012	87.9543219729089
2013	86.9961201624227
2014	87.58006831848378
2015	87.84918679865788
2016	88.22715495946414
2017	87.71650736721033
2018	87.60692091941907
2019	87.23407406364134
2020	87.43581459407302