Year	% of total merchandise exports
1960	1.3374363830039058
1961	3.145925457991156
1962	1.2978750477159944
1963	2.5972590627763044
1964	2.3702454562488287
1965	3.917629331993973
1966	4.412447747329308
1967	4.758031720211468
1968	4.201343627795047
1969	3.45654863409904
1970	4.3179247541755075
1971	8.48051270586482
1972	9.963419545373188
1973	9.557821947991311
1974	13.315136966029794
1975	13.939363005308289
1976	12.57971346049358
1977	11.933851080413572
1978	12.434705160198032
1979	12.438241106719367
1980	18.207371951839292
1981	19.47186728315384
1982	15.616400101099902
1983	18.099347027841315
1984	17.19164557666101
1985	16.928199305486515
1986	16.784919333384966
1987	13.8588669977986
1988	15.053413110789075
1989	14.587999914452698
1990	14.691077579827708
1991	16.291709774341445
1992	17.739501859566772
1993	19.043694179027433
1994	16.94427131816698
1995	17.854693509398025
1996	19.599602094537953
1997	20.010675274176748
1998	18.584906598362096
1999	16.524800745968204
2000	17.30840587757499
2001	20.64153798165838
2002	19.969322976311236
2003	20.62415535749837
2004	20.73953423870913
2005	21.023896560794984
2006	22.943210018672275
2007	24.927047936672185
2008	26.362979911276664
2009	27.954324744484047
2010	31.482594439022094
2011	33.44969429846287
2012	34.81678412107759
2013	39.78328784145851
2014	39.802045743660905
2015	36.49642563888189
2016	38.645897719507616
2017	41.30167038515838
2018	41.440046198325746
2019	45.508382795768796
2020	44.515487991321436