Year	% of total merchandise exports
1960	9.870848708487085
1961	5.1504809183990075
1962	7.780533168009919
1963	13.000656598818122
1964	11.145703611457037
1965	18.7598363235757
1966	20.10443864229766
1967	14.585381842019011
1968	8.929110105580694
1969	6.947725297724686
1970	16.13596175257057
1971	6.802445077563688
1972	13.979390852071392
1973	12.222385293000967
1974	11.855565517562836
1975	14.497732309723999
1976	14.358382702744452
1977	13.680060327884428
1978	13.451192685892924
1979	24.935077158300338
1980	19.554676518515755
1981	8.716756310423524
1982	8.563808292249252
1983	13.210148074471512
1984	14.445147004729058
1985	10.650284094031278
1986	13.948907237664313
1987	13.291387412906875
1988	12.762303665206726
1989	12.762303620270485
1990	9.662393993375003
1991	0.907724404245118
1992	5.83504242895565
1993	7.011184248072008
1994	7.263616136312794
1995	8.680481993173377
1996	8.070717616765348
1997	5.751009783670972
1998	5.777483323782295
1999	6.113061910778309
2000	0.2968792830746665
2001	0.09080518092833305
2002	0.01730621609003043
2003	0.015696921280500174
2004	0.03229522035343165
2005	0.037381290792639986
2006	0.08914574089157154
2007	0.014856136065081614
2008	0.010256466658340686
2009	0.006697840437581236
2010	0.01065413356534334
2011	0.0013723059186864321
2012	0.0015797738481372443
2013	0.002155297641770843
2014	0.0017845015839327756
2015	0.005496068837773616
2016	0.002202768091140448
2017	0.001958333080263224
2018	0.0017585962724346628
2019	0.06781565296167032
2020	0.09260997271057113