Year	% of total merchandise exports
1960	77.51926533663173
1961	77.06640660619539
1962	76.55213356614276
1963	76.64135064891215
1964	75.21959746246692
1965	74.0540487311798
1966	74.03961747522526
1967	75.30016214396781
1968	75.3183369255036
1969	75.08240082361606
1970	67.07805717635598
1971	65.90311043192732
1972	65.52055024378014
1973	68.98904816192953
1974	71.10755272432799
1975	67.63018990374773
1976	72.08594725710138
1977	70.44509233175896
1978	70.58412135983919
1979	71.88536164669827
1980	72.02203141745727
1981	71.15680262024047
1982	69.12158408960654
1983	70.7192484362539
1984	70.5506981963788
1985	70.54033352972408
1986	72.48287527569845
1987	74.25352552299377
1988	74.93121648455237
1989	76.48878005513448
1990	79.04752563282624
1991	80.90310128631512
1992	78.13652317694375
1993	79.08659315463308
1994	77.66850313599411
1995	75.53611331633894
1996	76.74639075053024
1997	76.99903339002792
1998	77.79165582012261
1999	79.84994675023516
2000	78.56145062565787
2001	79.21818927639337
2002	78.92092193543873
2003	78.10344507999147
2004	77.20311442640795
2005	75.95655096147887
2006	75.28271613336572
2007	73.03555519789506
2008	70.97916999533305
2009	70.03603863969889
2010	68.85712542760315
2011	67.27376637538323
2012	67.39537653670966
2013	67.16516388867714
2014	67.22973409942858
2015	68.09517267751049
2016	67.73870146266262
2017	66.26366395586966
2018	65.76102397683043
2019	65.17100798312593
2020	65.66830918476015