Year	% of total merchandise exports
1960	91.7824074074074
1961	91.76029962546816
1962	93.11163895486936
1963	92.1311475409836
1964	84.36944937833037
1965	78.44364937388193
1966	76.33477633477634
1967	74.10776766969909
1968	72.71669575334498
1969	75.26883381744021
1970	73.93238983993572
1971	74.52680435495282
1972	73.06124045062052
1973	68.47809033487707
1974	68.64562490489418
1975	70.5255965499553
1976	70.48985799333937
1977	69.69572899795767
1978	69.5846497081976
1979	73.2398591351619
1980	65.5039526699648
1981	63.881052426922516
1982	70.80257286099939
1983	67.10006171985694
1984	73.58518921685302
1985	76.85475664903561
1986	83.86090724550739
1987	82.73678577265045
1988	82.73338563083324
1989	81.81121642286793
1990	81.0708750803254
1991	80.21000743152571
1992	77.11880395569689
1993	86.19161808810755
1994	74.99246608597807
1995	73.17153709604831
1996	73.48227748451048
1997	49.952234791483725
1998	39.77226665642339
1999	27.742701479233723
2000	81.61775015225999
2001	75.49620233431804
2002	76.47146293745739
2003	75.23069638782918
2004	72.7721852294714
2005	73.08892866560964
2006	71.02085966981393
2007	67.43382494403014
2008	67.00007835432235
2009	66.01874184392219
2010	70.62975363263705
2011	71.78753484271218
2012	71.48312969271323
2013	71.1757205966689
2014	69.7938782535033
2015	71.64221595234906
2016	72.83578595879227
2017	72.63410488795047
2018	73.67417397802024
2019	75.120313811862
2020	74.92324497954002