Year	% of total merchandise exports
1960	83.79522455188835
1961	85.89094997189433
1962	81.77110305541171
1963	86.5768896611642
1964	85.74270557029179
1965	84.79595521849042
1966	86.99291693496458
1967	81.19103773584906
1968	85.58579881656804
1969	85.21404165487823
1970	86.96452261736637
1971	84.88485385296723
1972	81.8038911081521
1973	81.39907750578011
1974	78.84401355328569
1975	76.03358845692466
1976	82.32556150777896
1977	84.0295622299919
1978	81.82666678243052
1979	79.50742102804298
1980	77.21658438763323
1981	73.49437170495385
1982	72.2913553472011
1983	70.49276860987835
1984	68.1360949341318
1985	66.1303774424058
1986	66.90672463169244
1987	64.7138990781996
1988	60.136508620479
1989	68.17309141973928
1990	58.53612353711303
1991	59.866998172523466
1992	58.06042170736364
1993	63.80083397648109
1994	63.755970306819
1995	67.64230034487537
1996	70.76025533258732
1997	58.02627950625032
1998	58.337535354557055
1999	56.593590572787335
2000	54.10456628455358
2001	58.7215506151672
2002	58.0748786112952
2003	62.88257077135668
2004	61.22019993032068
2005	60.41295294038075
2006	59.72392669600075
2007	57.2783010041508
2008	60.250403281943775
2009	60.595730788936145
2010	57.576240822975485
2011	57.51063451654082
2012	51.686226322778886
2013	45.09366500365953
2014	50.60232428659942
2015	55.49811482670181
2016	56.59142921532075
2017	56.897956863912746
2018	51.971660256859764
2019	53.717761632377226
2020	54.34493370067537