Year	% of total merchandise exports
1960	93.81443298969072
1961	97.68211920529801
1962	97.67441860465115
1963	98.43373493975903
1964	96.15877080665814
1965	91.7933130699088
1966	92.07650273224044
1968	92.15686274509804
1969	95.62776820866141
1970	91.46812529957427
1971	87.16226236023371
1972	87.70983327922389
1973	82.56518364054247
1974	85.5657837463122
1975	97.07861819487394
1976	94.50164996333415
1977	92.49423047419462
1978	91.25145046176344
1979	95.74088545175285
1980	95.93182580813541
1981	94.22185383502627
1982	95.8076352564603
1983	96.36917944626988
1984	95.63476554493005
1985	96.40413294267589
1986	95.35622641743045
1987	96.5899189304112
1988	94.7112830970258
1989	93.2822148403482
1990	95.39185811273207
1991	95.73470051596014
1992	94.62381887619775
1993	92.99804515367788
1994	90.9876333995737
1995	91.04165081907809
1996	91.11090090166196
1997	92.43948539143034
1998	93.12072825756317
1999	92.85955777692624
2000	92.03672708538757
2001	90.72883219871008
2002	91.72996675046899
2003	88.1571456095381
2004	88.57746943945413
2005	89.32182077057145
2006	88.44146074451952
2007	86.67805319997845
2008	85.10747679402493
2009	84.37593324757955
2010	82.41792642939986
2011	81.05883103527813
2012	77.43201469663356
2013	77.76514562381557
2014	78.90328693398607
2015	75.02179880877445
2016	72.45309839855246
2017	72.39189125606403
2018	68.10771411243798
2019	67.37718680511847
2020	66.58486414774627