Year	% of total merchandise exports
1960	0.978068289138326
1961	1.7535580148391456
1962	1.3042520206424186
1963	1.2804201448666253
1964	1.9711925124116871
1965	1.5710706094683988
1966	2.1320577690764635
1967	1.6334120703021864
1968	1.303044082019665
1969	1.421726597176503
1970	1.2415816883324307
1971	1.4855108314934493
1972	2.176644044878696
1973	2.2603129582776016
1974	1.7870816415522097
1975	1.686496422616568
1976	1.5705446286804647
1977	2.1958152904127304
1978	2.2588385269253597
1979	2.3783781955414574
1980	2.444223382887774
1981	2.2885703806615068
1982	2.5273935240304404
1983	2.8163647962826963
1984	2.4310964866578826
1985	2.850305894660832
1986	2.7762345505916275
1987	2.9320381345662607
1988	3.5306252152510758
1989	3.5726821542504563
1990	3.5107040228017903
1991	3.2823724913865306
1992	4.123077355789498
1993	4.6658748633072715
1994	4.74250242257516
1995	5.134880559232944
1996	5.310855666540456
1997	5.17130588711036
1998	4.268593390889337
1999	4.543711061293368
2000	5.106089341612377
2001	5.346554574495744
2002	6.076808225854639
2003	6.7177965523397845
2004	6.8567655882279945
2005	6.821369154932904
2006	6.823979720089671
2007	7.186652236145008
2008	7.500158828705844
2009	8.952645821146906
2010	9.617864959699993
2011	10.26585411650316
2012	10.759608332375905
2013	11.552531618637143
2014	11.601356448617656
2015	11.838974440504987
2016	12.170929281797278
2017	12.85856951168092
2018	13.652865654255725
2019	14.569639412648531
2020	14.925738011595953