Year	% of total merchandise exports
1960	0.4351748659979834
1962	0.7845802186940137
1963	0.5518540951611818
1968	0.6249213935354043
1969	0.5843799438220385
1970	0.8637421112839166
1971	0.8994555477803758
1972	0.6940800131423435
1973	0.6898998444450509
1974	1.2881324564139298
1975	1.376400391249762
1976	1.1960391381642337
1977	1.24599867125687
1978	1.6123155491173367
1979	1.1746117195501786
1980	1.663552763473659
1981	1.342419438939463
1982	1.8895282131301774
1983	2.506170815458462
1984	1.9830159389770075
1985	2.2856252342498147
1986	2.0976719662843815
1987	0.7814643886084118
1988	0.8235915326857342
1989	0.6309083153163931
1990	0.7163521049017263
1991	0.7817765534538754
1992	0.8563405362212817
1993	0.535592482122665
1994	0.3557862862212616
1995	0.3869584514188537
1996	0.3248703243878081
1997	0.35084104694465046
1998	0.43884849438384205
1999	0.39877411373111177
2000	0.39056270880720917
2001	0.43981694712130415
2002	0.493465078781974
2003	0.46299601494318215
2004	0.523519865430005
2005	0.4598444418305778
2006	0.4503482998846259
2007	0.45179373224514896
2008	0.5954389190131585
2009	0.4863838068686689
2010	0.4400006130929403
2011	0.2950253071474722
2012	0.3321096119066389
2013	0.35228523678164264
2014	0.2823096322758419
2015	0.2699693323471681
2016	0.240540023334754
2017	0.26846488064993745
2018	0.2782994193226561
2019	0.2292125124776682
2020	0.17793234336845107