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	84.73977963325603
1982	83.74777546937942
1983	84.02390382694298
1984	84.15689650442647
1985	83.6136376451229
1986	83.22373272462339
1987	83.31847916128204
1988	83.75791696985854
1989	84.01513658508235
1990	85.10030022819967
1991	86.92801185505353
1992	85.83064698518903
1993	85.13088223967661
1994	85.4214386947286
1995	83.28155122600667
1996	83.84769512025403
1997	84.5168833030413
1998	84.12809011983006
1999	84.5075664714483
2000	84.18151197228097
2001	83.44073207848484
2002	82.43674644827108
2003	81.3923970871072
2004	80.50486541775868
2005	79.59336786665244
2006	78.4916413230523
2007	76.04542810911083
2008	73.89479490923821
2009	73.12097161964509
2010	71.79316551665346
2011	70.21356708059288
2012	69.6347348244443
2013	68.87537805187495
2014	68.40151433010459
2015	68.69202104689138
2016	68.04842585858196
2017	66.65457886015089
2018	66.53563985909811
2019	65.35388692659095
2020	66.43466117685459