Year	% of total merchandise exports
1961	10.950226244343892
1962	2.5686977299880525
1963	10.545839957604663
1964	16.127200454287337
1965	10.07705986959099
1966	11.504424778761061
1967	5.042016806722689
1968	4.537313432835822
1969	5.545876887340302
1970	7.818504286136566
1971	3.086269744835966
1972	6.407266905648558
1973	8.170241859670114
1974	5.386900587777792
1975	2.445187582662179
1976	3.502215879215804
1977	5.193204906313493
1978	3.128715113316853
1979	1.8476846164138618
1980	2.3494470354362273
1981	1.2031742104912604
1982	0.5521753934064633
1983	0.5386728917902739
1984	0.45642392395092635
1985	0.03175010227196405
1986	0.055748078951333435
1987	0.2059268553714433
1988	0.09337427199378341
1989	0.052290085195602326
1990	0.03640531950005726
1991	0.02185610052228844
1992	0.025411845991223297
1993	0.006036043269152841
1994	0.0026101887855453504
1995	4.039335587220914E-05
1996	0.007448956909327094
1997	0.011005014619129916
1998	0.030090151168632444
1999	0.01037819799595761
2000	0.5114578983069558
2001	0.5340676737363894
2002	0.606167898910364
2003	2.0823377860918444
2004	0.5763633678640783
2005	0.47153671738336017
2006	0.7545130556229661
2008	0.138271280156531
2009	0.1286028297991925
2010	0.6616612162122839
2011	1.0425474612239485
2012	0.18204629304773165
2013	0.17015565327818155
2014	0.10942668471651447
2015	0.36343758009101856
2016	0.24285282807816247
2017	0.10548251614988745
2018	0.036955952528793204
2019	0.036956488769213085
2020	0.03695579218318989