Year	% of total merchandise exports
1960	3.375517822187827
1961	2.8615414150065717
1962	3.6575554039007216
1963	4.339584365657123
1964	4.1695720481565175
1965	3.810587845236138
1966	3.286984452214625
1967	3.532005202341993
1968	2.519009610822567
1969	1.6394979886630257
1970	1.8528400430900787
1971	1.7288509850926312
1972	1.230684241224808
1973	1.216628908084736
1974	1.2728403437791773
1975	1.7593747743629853
1976	1.2500702402076418
1977	0.9540370820507783
1978	1.0977691813367976
1979	0.9855147451372455
1980	1.0844706750532203
1981	0.9520660281886367
1982	1.1163359795381553
1983	1.197787976710322
1984	1.1743397885777982
1985	1.1671479375395033
1986	1.0006759490009585
1987	0.8273272653421674
1988	1.046630252555187
1989	0.9132479417346804
1990	0.8654730670446968
1991	0.66735247221812
1992	0.6377044504002136
1993	0.7178345480426782
1994	0.5604285652479442
1995	0.6877976983431472
1996	0.6599371432287278
1997	0.644285142286986
1998	0.576035158480188
1999	0.5412507623363843
2000	0.48233936069779587
2001	0.5374645316455585
2002	0.6133972564639353
2003	0.7150384619905744
2004	0.849533503054142
2005	0.8999103462890462
2006	1.0752717396607088
2007	1.4894545747334638
2008	1.444703215964187
2009	1.7087603848215005
2010	1.660512565865308
2011	1.6682028664562982
2012	1.4742987527525264
2013	1.4584948102835167
2014	1.413350601392838
2015	1.574530353747702
2016	1.6631819248099244
2017	1.8113409239004563
2018	2.088411819083845
2019	2.1871490189898313
2020	2.063354545582074