Year	% of total merchandise exports
1960	9.209594170630503
1961	8.518518518518519
1962	6.627980777949044
1963	6.833217270194986
1964	6.886390073671967
1965	6.459078476751526
1966	6.848223181667221
1967	6.77490871152843
1968	6.233178370442868
1969	6.259721040736508
1970	6.552202566770725
1971	6.352572885338943
1972	5.31587841276951
1973	6.029743951323332
1974	8.076604337583099
1975	7.261998555278783
1976	6.656698555199727
1977	6.76121032224745
1978	7.780197515994781
1979	7.6412721020029135
1980	8.829087375678982
1981	8.400101061574762
1982	8.110975386820602
1983	6.940977200360302
1984	7.296365319785385
1985	6.6781860492746965
1986	5.288167303030396
1987	5.486360674610948
1988	4.6885517007792386
1989	5.244289557168013
1990	6.0455308087111055
1991	7.315204770238185
1992	10.398224793783132
1993	13.89125953054458
1994	13.647599420039311
1995	14.055490782291294
1996	15.411581092237206
1997	17.44187284078034
1998	16.206829866125524
1999	13.565826790333146
2000	16.012665919353026
2001	16.633106692066647
2002	16.279350461145818
2003	17.133453336773027
2004	21.24290948265411
2005	22.66633994294056
2006	22.857941871211025
2007	23.237553847339257
2008	25.275736407960885
2009	23.625070456407286
2010	24.94589699829662
2011	24.204468084025567
2012	25.923203031632397
2013	24.78583435474399
2014	22.713980093070937
2015	20.716736595428696
2016	20.788889255394125
2017	20.85130027832304
2018	20.628919965759955
2019	19.87858118743475
2020	19.88549829114526