Year	% of total merchandise exports
1960	1.71136203246295
1961	2.044187487094776
1962	2.0289855072463765
1963	1.9938650306748467
1964	2.4349442379182156
1965	1.520158625247852
1966	1.0232711668592176
1967	1.2530885986586657
1968	0.6459642986560791
1970	0.5368901768503306
1971	0.62527688121005
1972	0.14177521963041503
1973	1.8645800915840485
1974	0.7003983433138998
1975	0.8690015741749827
1976	2.2665291021285268
1977	0.28916791055697016
1978	0.41446482229820747
1979	0.01195873150473457
1980	0.17137960582690662
1981	0.023201138402524284
1982	0.006730833950326445
1983	0.0009331724129350139
1984	0.0006369528177200274
1985	0.6945611838930571
1986	0.012673893602440858
1987	0.07412119748439529
1988	0.005706346683669379
1989	0.18343355411807372
1990	0.007775060160011512
1991	0.3556343060581077
1992	0.09895312317106399
1993	0.10827305110713197
1994	0.21488132209308972
1995	0.32321574672473385
1996	0.2542466168158903
1997	0.4740832994195994
1998	0.812941355188764
1999	0.9224353715355735
2000	0.8149600303059142
2001	0.6718489353810069
2002	0.35258751710024716
2003	0.4220082045424455
2004	0.2857195135278685
2005	0.3363237280066521
2006	0.5064693512111085
2007	1.4110839420147148
2008	2.0798697556124464
2009	0.6276472940493547
2010	1.1070548629147616
2011	1.186665465324023
2012	0.9675245994315873
2013	1.0835292634879725
2014	0.8693625925865693
2015	0.6669464830067685
2016	0.34314142724284535
2017	0.4691873142620603
2018	0.9547326141327238
2019	1.2626010575873072
2020	1.660446899620435