Year	% of total merchandise exports
1960	3.738719381177482
1961	2.66605378074006
1962	3.7244348762109794
1963	3.2654887049876984
1964	3.847556528081692
1965	4.218546738524438
1966	4.966495861253449
1967	6.0600117670131395
1968	8.712606837606836
1969	10.338030945106928
1970	11.857219317386472
1971	5.681221943683321
1972	5.371819164642014
1973	6.190618719801599
1974	7.162018309559293
1975	9.67409901772994
1976	11.578747998369998
1977	13.355086483208686
1978	12.756442764280115
1979	14.191435025733426
1980	11.087411390238026
1981	15.482091799617642
1982	15.922599328384015
1983	12.405355913713164
1984	10.797577372730222
1985	10.104098912269142
1986	9.065153034052818
1987	10.977580688820597
1988	8.298981361376907
1989	6.957172666664563
1990	8.062501586207075
1991	11.545539937737063
1992	12.961288240717103
1993	14.000066851533083
1994	11.788285214095662
1995	13.415232374988701
1996	11.902490522354938
1997	10.55319018408768
1998	12.660527950275247
1999	9.702831582407443
2000	10.43344390466214
2001	14.55149030953034
2002	9.741193354213896
2003	5.573119480551041
2004	10.354779789285708
2005	10.254927317920757
2006	11.488960126764992
2007	18.185675334922827
2008	18.394395412369875
2009	12.842410604399143
2010	4.400331472907181
2011	3.132380652109818
2012	4.550430456402008
2013	5.962365684225877
2014	6.600897223385509
2015	6.571754922318823
2016	8.405536492439998
2017	4.833255621293852
2018	1.6087955609206523
2019	1.5786430137854464
2020	2.6587832626736505