Year	% of total merchandise exports
1960	69.81093100762482
1961	69.67804088655102
1962	70.87708680913147
1963	71.20281251025288
1964	70.38598145992071
1965	71.50300280312807
1966	72.87823624568287
1967	73.72484659886231
1968	74.47037152963135
1969	75.35811534840948
1970	75.35804517144261
1971	82.2218480412043
1972	72.71117222231968
1973	76.0854069628793
1974	76.90518526846472
1975	75.3932863011621
1976	75.94723290735958
1977	77.03148503739564
1978	80.52866435614887
1979	79.79040009340025
1980	75.3345281686656
1981	69.23608355622657
1982	71.99714713781866
1983	73.92303640965504
1984	72.42158564864832
1985	78.4268600445179
1986	73.15743288088984
1987	74.24785263843945
1988	72.97355155837843
1989	73.32178876348127
1990	75.89546020549004
1991	76.46493516935901
1992	75.59405944066854
1993	73.84637634503997
1994	71.92911665057326
1995	70.55959191256534
1996	64.25126958647944
1997	66.0505796415725
1998	66.52597992114772
1999	69.20418802858927
2000	67.64238958206865
2001	66.70481119545359
2002	64.87190450420688
2003	64.5026268660552
2004	60.43176720070376
2005	63.764361086217605
2006	66.40525818618018
2007	65.41956108897334
2008	65.52929703370806
2009	60.36419653147015
2010	63.965867699754355
2011	60.44386479157183
2012	60.30368948929288
2013	55.684795840813294
2014	51.157745770682006
2015	49.52238593184002
2016	50.8539736389376
2017	50.90374598375941
2018	48.48360829056929
2019	48.18553565934294
2020	42.656894437136465