Year	% of total merchandise exports
1960	82.86235186873292
1961	87.37434660233212
1962	86.29886737303617
1963	87.79734644497022
1964	88.35269005705567
1965	87.09545822059368
1966	86.4315607540863
1967	66.4934417472847
1968	65.76317016867498
1969	69.80207034697223
1970	82.55442155211173
1971	69.59036458710547
1972	77.1561658252568
1973	79.18383497560663
1974	85.5454309108643
1975	85.21019564750006
1976	81.88837124627322
1977	79.97766499665258
1978	79.16884707653364
1979	79.72327387545243
1980	78.21406918309081
1981	77.69720053980691
1982	79.48795974510836
1983	79.60053557965846
1984	78.74702982628769
1985	77.5669877031921
1986	80.66884534701984
1987	79.75180570275887
1988	70.0362969565066
1989	70.10550436500729
1990	68.06072244832563
1991	82.61651916375283
1992	82.5795453236803
1993	80.97346874774932
1994	73.53713299785312
1995	72.63128261865494
1996	71.09927875926513
1997	70.11069748082105
1998	69.70863410519424
1999	70.98864768029124
2000	82.20122209660165
2001	83.2396235917771
2002	81.23401960353927
2003	82.61605763687287
2004	78.19710794204016
2005	78.03373926896256
2006	75.46356639735411
2007	76.01691969808492
2008	77.05736948764994
2009	75.17066669192324
2010	76.90971979501043
2011	76.7015391890918
2012	74.46711734635471
2013	73.19064797460706
2014	70.22933683468307
2015	70.64116329999473
2016	66.77614394443923
2017	64.80438884460334
2018	63.91560470333718
2019	62.64975613035123
2020	60.69538944268624