Year	% of total merchandise exports
1960	11.58014747253398
1961	12.312134657370237
1962	12.702235139436718
1963	12.106073221810108
1964	12.997058255625094
1965	13.052834593716693
1966	13.705194914383402
1967	13.880971587344268
1968	14.2656624718272
1969	15.885401076277331
1970	15.570159439240797
1971	15.889735544598835
1972	16.278927273493178
1973	16.53175548511371
1974	15.11903746799686
1975	15.95010529726227
1976	16.278217388763863
1977	16.33180780170789
1978	17.398276693517317
1979	16.29137366298722
1980	17.402647295079106
1981	16.343455497382198
1982	15.972147156207859
1983	16.4638086109661
1984	16.51809238959508
1985	15.797286132388574
1986	16.066416641582805
1987	15.312388310010173
1988	15.45344166238787
1989	14.855150502424518
1990	14.327145335850085
1991	12.63213601238353
1992	12.772491576069644
1993	13.368290450611973
1994	12.396832833612544
1995	10.914105089645924
1996	10.15912128036625
1997	12.072805874775108
1998	10.10362374856019
1999	1.9916898762188142
2000	1.6759548490868075
2001	1.7338109474081451
2002	2.2481427049484517
2003	1.7328487256234208
2004	2.3576388790299383
2005	2.0675604459399337
2006	1.9923282116194208
2007	2.3753063906631797
2008	2.221878943267868
2009	2.6133129537651114
2010	0.9505981867382678
2011	0.8735034616919728
2012	0.9820862012924264
2013	0.894068934905636
2014	0.736449312684041
2015	0.7587269096755843
2016	0.6053214236829556
2017	0.7278118279911376
2018	0.9298918833365967
2019	0.7872046765916456
2020	0.4557719515041812