Year	% of total merchandise exports
1960	79.93119872982271
1961	77.27788126670447
1962	75.2821979553603
1963	78.01131141967296
1964	77.76184396839861
1965	77.2761692866433
1966	80.7060628115731
1967	83.62469167018523
1968	83.31059352176679
1969	84.4965258698803
1970	87.0411176905389
1971	87.1447131484326
1972	86.41638172450605
1973	87.61679823641785
1974	90.22411369360233
1975	89.78399590711307
1976	89.78019229282893
1977	87.9952480866429
1978	84.41818716809969
1979	85.80472994092386
1980	85.43087749543994
1981	85.01865798500775
1982	84.08054170125737
1983	84.32199693239248
1984	84.4141115280147
1985	83.92740888897949
1986	83.55121103986941
1987	83.54996286808223
1988	84.01213553693384
1989	84.21961736842728
1990	85.32585150317674
1991	87.0240622251703
1992	85.94446738736984
1993	85.26449908090376
1994	85.50174006156594
1995	83.33271189993175
1996	83.95848874159229
1997	84.58829128468656
1998	84.20079693901504
1999	84.56719381937707
2000	84.27678244915482
2001	83.53327291964607
2002	82.50336630449937
2003	81.4573758513406
2004	80.57473883259667
2005	79.65323908176299
2006	78.55448718815778
2007	76.15132521754886
2008	73.95220514376
2009	73.1724884064005
2010	71.85323744484788
2011	70.29402283471316
2012	69.70693278115043
2013	68.94663719660234
2014	68.46848634947602
2015	68.75877754357774
2016	68.11946817683821
2017	66.69446980995117
2018	66.54945259199093
2019	65.36231134835572
2020	66.4371187153104