Year	% of total merchandise exports
1960	2.5575311306472917
1961	2.5826888803882406
1962	2.1569709760774063
1963	2.8769678191688492
1964	2.9622861185209204
1965	3.063631020772102
1966	3.046475933111598
1967	3.2660000610387643
1968	3.266558300657109
1969	3.2375664186409194
1970	3.0076692610758173
1971	4.673459435410306
1972	3.5704669132091826
1973	3.3223220536784037
1974	0.9051852684647156
1975	1.1525002044898103
1976	0.9660705937985927
1977	0.9139834161289183
1978	1.2609177673492158
1979	0.7040837171307286
1980	1.2627844893746265
1981	3.196629737812827
1982	2.8585038208235587
1983	2.288190380455465
1984	2.2901394453002326
1985	1.923510622128121
1986	3.3881131169490755
1987	3.421183741868345
1988	3.964444010585065
1989	3.8728067017923946
1990	3.8376245224191057
1991	4.205084314580425
1992	4.406615371850832
1993	4.5239983134988515
1994	4.963477193790122
1995	4.927634542820342
1996	4.0669802165590765
1997	3.7302968088616764
1998	4.35652124397531
1999	3.4499213362514034
2000	5.128125287398003
2001	6.197953018007599
2002	7.89395396107975
2003	6.594930081903769
2004	6.259477662999943
2005	2.96591576102715
2006	3.5515334598480823
2007	8.018618451405048
2008	8.56652110508793
2009	10.162673972516908
2010	9.25710973853639
2011	4.210623632479129
2012	5.72415765581717
2013	5.117035533574021
2014	4.566067073936424
2015	5.190017870351461
2016	5.720541477018845
2017	5.5236236351626165
2018	4.358946140646917
2019	6.3565767905619905
2020	7.680469179562442