Year	% of total merchandise exports
1964	82.4918699186992
1965	86.81835276419707
1966	88.43813387423936
1967	88.03224212007149
1968	93.32194031812804
1969	92.96222089685764
1970	86.52259006203113
1971	76.62529241939971
1972	80.31596143171507
1973	82.56993357762126
1974	81.91799754299754
1975	83.79238319398148
1976	83.75749342035299
1977	85.16210643633325
1978	80.71427517085627
1979	78.86678723874434
1980	80.35917061412525
1981	74.35435490782423
1982	72.52199661325712
1983	72.52199662224285
1984	63.48732153978589
1985	65.37186872047259
1986	59.93417992217114
1987	59.45446312630472
1988	74.39428334435038
1989	69.31888885390369
1990	66.19281621837659
1991	51.45696345398484
1992	64.61275258097012
1993	60.16202614877717
1994	47.980252479854165
1995	53.61442085818522
1996	39.32625052633106
1997	60.57713306392798
1998	59.34188382121499
1999	32.00728447110415
2000	49.89685193107357
2001	64.74694761339326
2002	60.01098868047404
2003	48.46799094335047
2004	47.31953643111155
2005	53.597390865818426
2006	53.80663153476536
2007	57.501094897424906
2008	62.995019171713665
2009	60.87970557415512
2010	59.209252432767144
2011	60.28678869050427
2012	51.46331994312383
2013	46.924438851863634
2014	58.81732256966982
2015	59.26597555134462
2016	58.43609336686823
2017	59.81830406405001
2018	59.85230362940669
2019	55.622557704770415
2020	59.550774762235335