Year	% of total merchandise exports
1960	6.786193438224173
1961	6.3135125391496345
1962	5.874649713204294
1963	10.53212346919674
1964	9.369804198766692
1965	9.186144346094169
1966	10.92536729851245
1967	10.03567093438638
1968	12.063352515978123
1969	9.16325475880459
1970	9.675602534515694
1971	7.1501124576510176
1972	7.789795088817092
1973	7.831394232295379
1974	8.159477065250286
1975	10.814154207658051
1976	8.04556100549724
1977	7.852541725671196
1978	10.281683837923387
1979	10.889844999262591
1980	11.572575325615263
1981	9.38336050929399
1982	8.366690380451775
1983	9.607103298026797
1984	8.270764842403022
1985	8.84401892902881
1986	9.604638296431647
1987	10.361764933125063
1988	11.829347407080101
1989	9.749033093258012
1990	7.997016350092475
1991	9.452040451937439
1992	10.50218141974014
1993	9.462157092125617
1994	8.63360504424203
1995	7.832792988177243
1996	7.2675286788831786
1997	2.7501038780570797
1998	18.834610566723722
1999	10.100895460600888
2000	6.271108688963068
2001	14.569135547285637
2002	13.009474492894018
2003	8.637738478846103
2004	8.309600866845136
2005	7.042517371823305
2006	2.621199350687457
2007	2.3920429641259093
2008	2.633044777469266
2009	2.2422903561178247
2010	6.127374303927336
2011	6.589995763060862
2012	5.924143502897571
2013	5.634828043692414
2014	5.49317116721339
2015	5.932891640431417
2016	5.107068778277267
2017	4.674258127232197
2018	4.701531800600592
2019	3.44331648210981
2020	5.270042773775632