Year	% of total merchandise exports
1960	4.307116104868914
1961	6.326530612244897
1962	6.434782608695652
1963	7.504078303425775
1964	5.419580419580419
1965	9.927007299270073
1966	12.787723785166241
1967	12.92682926829269
1968	9.339407744874716
1969	10.100373820194552
1970	11.479036975924398
1971	9.121583623889325
1972	13.42446914263078
1973	13.385213102549788
1974	13.14317461520007
1975	9.669823870590113
1976	10.037551974538893
1977	10.291699099552048
1978	11.006001244876629
1979	12.854483667750847
1980	15.89482449397899
1981	16.192527100463767
1982	17.925053615829487
1983	19.411459688842886
1984	15.910809626021486
1985	20.426753050862057
1986	17.556315296593556
1987	12.862248800031065
1988	14.063281723012516
1989	18.831760631898607
1990	19.689195772018287
1991	15.513856105508095
1992	14.73308027820873
1993	15.65996386828128
1994	12.015692035436537
1995	11.839102229044691
1996	11.895764806877242
1997	10.909748902013714
1998	11.938171412303948
1999	9.191068325081774
2000	0.8856863372776561
2001	3.799728973501837
2002	0.379399307759936
2003	2.3078330915772662
2004	7.750817593725549
2005	17.005853063834415
2006	19.986819772309836
2007	16.828476277578428
2008	21.066556836368385
2009	15.315500494553152
2010	15.396708001642873
2011	19.81471755536914
2012	19.5710550275946
2013	16.788998761679228
2014	10.833398131037562
2015	16.0681059269524
2016	11.845744499972783
2017	12.683223104699174
2018	27.96066638231391
2019	13.363249303125196
2020	6.945867251833647