Year	% of total merchandise exports
1960	0.276009542912993
1961	0.3549003265889596
1962	0.40846282335863465
1963	0.39277836069450583
1964	0.39333822758021625
1965	0.4201513551787074
1966	0.32182386708107386
1967	0.37185979017242893
1968	0.41613602579447057
1969	0.36203891582149383
1970	0.4262560451914227
1971	0.49137917310774426
1972	0.3214251934848042
1973	0.5790046934289474
1974	0.6453424188969886
1975	0.6160052543670353
1976	0.5763351076697598
1977	0.7762395128891044
1978	1.200287218829519
1979	1.1845186698463737
1980	1.3921816344886888
1981	2.0099708510852974
1982	1.5020529907976385
1983	1.3479017238732118
1984	1.624717937255481
1985	2.021123180031137
1986	0.9893823599110807
1987	0.9896593111037499
1988	0.896929092941663
1989	0.7849524650268179
1990	0.7667812593509957
1991	0.6787628321486663
1992	0.933784242570773
1993	0.629073691719071
1994	0.7169914107464658
1995	0.6611093296758827
1996	0.6485196747553126
1997	0.5757051060494255
1998	0.528399018361252
1999	0.4468034450094528
2000	0.40031476714080955
2001	0.5855798966916511
2002	0.6560923417223141
2003	0.6530420312801236
2004	0.7505047648476451
2005	1.0022783328956502
2006	1.0987679649415398
2007	1.172135282222337
2008	1.2002554905708784
2009	1.1635874846834484
2010	0.946779318033545
2011	1.0500872851995624
2012	1.0639350217343477
2013	0.8792739213760354
2014	0.8051572805743658
2015	0.8319617673011592
2016	0.8187391691865207
2017	0.7803496779982587
2018	0.6914717362448495
2019	0.6704893526516076
2020	0.6945968726985426