Year	% of total merchandise exports
1960	5.459198180267273
1961	5.472636815920398
1962	5.27536231884058
1963	3.469119579500657
1964	3.2333100721097927
1965	2.4498366775548295
1966	1.9356343283582094
1967	1.8413597733711047
1968	1.7014519056261341
1969	1.5099205523896677
1970	1.5569783395002703
1971	2.0703053852225124
1972	1.7559248758634733
1973	1.5755979811279348
1974	0.8976175220583481
1975	1.9141892769051019
1976	2.3711152171671914
1977	2.6354905539767257
1978	2.760225030661761
1979	1.924620747163049
1980	1.8169115414845525
1981	1.852022038712162
1982	1.840262328064847
1983	1.5552585105033612
1984	1.6429954809554552
1985	2.150547537692145
1986	1.9969920128515637
1987	1.8116876943761628
1988	1.0700232249684751
1989	3.1585326779327696
1990	0.9714834299249107
1991	1.7992619966778787
1992	2.1473771756639786
1993	3.0688743399083567
1994	1.5426508689233056
1995	1.9052667708182487
1996	2.3540578975970887
1997	2.453092929131356
1998	0.6650340381099159
1999	0.4658609572962556
2000	1.8315460887423543
2001	2.148884532542683
2002	2.650813880789194
2003	2.663124635101406
2004	2.5973185585111778
2005	3.01554785704948
2006	3.181892382482382
2007	3.5699401655760172
2008	3.5374685956820855
2009	4.548574948747894
2010	4.770926274561963
2011	4.469912672254474
2012	6.282519683841572
2013	6.260309600754427
2014	6.476210187073886
2015	7.0043155934016585
2016	6.588588117254838
2017	7.4602888445308935
2018	5.489080432396984
2019	5.418042838541736
2020	4.874976220958636