Year	% of total merchandise exports
1960	7.953667953667953
1961	9.409064830751577
1962	16.764514024787996
1963	8.22746521476104
1964	7.027328499721137
1965	8.102456874019865
1966	7.7873254564983885
1967	8.00252047889099
1968	7.243916242218449
1969	8.267185861914033
1970	13.460503832761612
1971	8.396371344119476
1972	9.182853565789351
1973	11.438400477766441
1974	13.062147247450762
1975	8.993224603987093
1976	7.163825844448929
1977	7.691016201749059
1978	7.523423400786617
1979	4.914946777561009
1980	9.328412824171435
1981	10.627652494941287
1982	11.822738360254261
1983	9.969253747346501
1984	10.138192334638939
1985	8.821587019089096
1986	5.415905356072777
1987	6.3611080976300585
1988	9.451610115292205
1989	7.382070060336969
1990	8.808695596894726
1991	5.954127897236816
1992	2.71975824371167
1993	3.883284594566555
1994	1.8781361707508624
1995	1.6843052347007166
1996	1.6107520861848943
1997	1.8929120576974015
1998	2.0630380561154147
1999	2.982755524510506
2000	1.6543590220678324
2001	2.219868548438625
2002	1.5879155640053784
2003	2.625657408362513
2004	4.9086221009573165
2005	4.474496232654445
2006	3.910254009614716
2007	6.592255168818591
2008	16.05773420341424
2009	19.773444849014627
2010	18.505068112323812
2011	17.651238367516374
2012	21.773531408349946
2013	21.296758080054442
2014	22.470635635709527
2015	22.22295201276463
2016	19.621714338736272
2017	17.03394839520293
2018	13.205590283977703
2019	18.6603281883151
2020	15.12861210225354