Year	% of total merchandise exports
1960	3.9326504179912867
1961	4.171950416310321
1962	4.857431699979293
1963	3.603199930056174
1964	3.513110339096743
1965	3.9238178474536154
1966	4.929463823137225
1967	7.580503332049447
1968	3.887071698628071
1969	3.998765443763129
1970	2.6100839296856995
1971	2.255595819332326
1972	2.416643761760788
1973	2.4454834553219142
1974	3.8534401378705603
1975	4.4001825113784125
1976	5.069259867951795
1977	5.167612393030842
1978	4.9979994968962425
1979	5.437145741699499
1980	6.062234390702777
1981	9.947510712100053
1982	9.978237739332926
1983	8.69301231968343
1984	8.053499528450141
1985	7.254370442818092
1986	6.0295827471321495
1987	5.145568495796014
1988	5.799080205632168
1989	4.513193707273999
1990	4.022363604400715
1991	3.275438494321082
1992	3.9839753143522345
1993	2.5484220725167446
1994	2.4063372259714777
1995	2.4506932296519763
1996	2.242007884469369
1997	1.935973577169405
1998	1.6708443974541534
1999	1.4111757746870977
2000	1.2434104669019048
2001	1.2973421635184834
2002	1.3957818234911452
2003	1.3128032982507154
2004	1.4023798488695416
2005	1.640309943327779
2006	1.6196154324415477
2007	1.560774299017783
2008	1.830676759057422
2009	1.880023341041583
2010	1.5789963817365342
2011	1.7366923196370196
2012	1.909866941136612
2013	2.103713781731268
2014	2.168187750702718
2015	2.2039908169150126
2016	2.074557330143588
2017	1.8245304501409036
2018	1.7299265406382447
2019	1.8167938412154165
2020	1.6798177593224255