Year	% of total merchandise exports
1960	10.474612919905342
1961	8.344936514342066
1962	9.835883113471148
1963	6.622644034487248
1964	5.6861377074070765
1965	4.906118197156582
1966	4.3259665997607435
1967	3.650101455008851
1968	3.0530733290887553
1969	3.3272586039978687
1970	3.0913793468875865
1971	4.069269596264884
1972	4.231907756067489
1973	3.010637600977505
1974	2.513662844460884
1975	2.0892933648437606
1976	3.205868150162299
1977	3.3736618522089037
1978	3.696453427379575
1979	3.3902882533885585
1980	3.1478780960075685
1981	3.7277322774841464
1982	3.28507031458942
1983	2.750344993954315
1984	2.870323723257706
1985	2.6051508683138342
1986	3.509496956386162
1987	3.083539980466621
1988	2.379460786936286
1989	2.376238299027079
1990	2.856180616145964
1991	3.6221954186138645
1992	3.1110268785597635
1993	3.7081896880033716
1994	3.561051868595353
1995	3.7511211108446787
1996	3.38191390637935
1997	3.741429095707944
1998	4.411098552163584
1999	4.770096596522169
2000	4.657783658531199
2001	4.837102572644184
2002	5.04522644062204
2003	4.745278176211401
2004	4.519709992313302
2005	5.749578162579836
2006	6.342720142241001
2007	8.246689201116451
2008	8.041276753751006
2009	7.697374928041785
2010	7.590067574960305
2011	6.8321891767548975
2012	8.205340612540814
2013	6.738108587393249
2014	5.5751234498056075
2015	6.648182667131904
2016	6.1290184200013655
2017	6.920895300229564
2018	6.930082269575275
2019	6.833670062668753
2020	6.0585431731803565