Year	% of total merchandise exports
1960	1.4161220043572984
1961	1.951789890268034
1962	2.0299865229110514
1963	1.7250353186110492
1964	1.2830924151372423
1965	1.092947660997786
1966	1.0499849557491518
1967	1.1205294937296795
1968	1.1523143513550498
1969	1.5194008298580248
1970	1.2217263785157055
1971	1.0140338668163016
1972	0.7983167858655268
1973	0.8288356745883972
1974	0.9973561154832892
1975	0.9024736057176507
1976	1.0062038581522004
1977	1.2069011976169575
1978	0.84064083770188
1979	0.8036929823852342
1980	3.888964712435102
1981	1.4367418718624385
1982	1.3004258803057933
1983	3.1778892179132856
1984	1.88646074560712
1985	0.7253690500642844
1986	1.1576800975451556
1987	0.8352952624139001
1988	0.6316822664360097
1989	1.1339607754835663
1990	0.6963919894927537
1991	1.6991258319782871
1992	1.196746389553998
1993	0.8911170491527511
1994	0.8474114891907388
1995	1.2919988103354483
1996	1.3775569338581377
1997	1.1521169884801572
1998	1.118657626649308
1999	0.8494775114674025
2000	1.2537126230772384
2001	1.8256418216342336
2002	1.6620099367880372
2003	1.4004465984288335
2004	1.2995117011323394
2005	1.2487134308965908
2006	1.4911267724676847
2007	1.6772289329042376
2008	1.3988383834433011
2009	1.4686762837170149
2010	1.1949971152800092
2011	1.020122882726094
2012	1.2798793651335352
2013	1.1370910028752315
2014	0.8963803793575833
2015	1.2072846450895491
2016	1.3428852162438922
2017	1.2000511795544633
2018	0.9036076150453529
2019	0.8170909101470195
2020	0.8656071078130729