Year	% of total merchandise exports
1960	10.401761144744084
1961	9.977578475336323
1962	15.578111209179172
1963	8.455068614431164
1964	9.775967413441954
1965	6.201947719118401
1966	11.149481993093241
1967	9.481550677253619
1968	9.857942315970728
1969	12.62484751845391
1970	10.76360151587751
1971	10.5339417202658
1972	18.927626376512734
1973	6.8241668155109485
1974	4.135722481319322
1975	1.9551082921989107
1976	4.658501643710058
1977	9.409421068076005
1978	4.119536003429683
1979	0.262451171875
1980	0.4045537186120525
1981	0.4842093432735174
1982	0.4169106037220359
1983	3.2037538026334995
1984	1.9695972345694595
1985	2.354821853474889
1986	1.740380057482644
1987	1.2613640727128346
1988	2.007788832524761
1989	2.0487443052057026
1990	1.016197397615048
1991	0.5659074817151559
1992	2.487979404204388
1993	0.7649922129545103
1994	2.9796778945513136
1995	4.301853511406875
1996	1.9161856870237308
1997	1.8328892909716092
1998	3.532470775935965
1999	1.6775659899812754
2000	8.097596537421413
2001	8.084842990231444
2002	8.030117870594971
2003	4.19785031268972
2004	1.3200497990402775
2005	1.4206210217767152
2006	0.7950227060666387
2007	0.8087957883879807
2008	1.7509615276622863
2009	2.4968920702235358
2010	1.3976680497370295
2011	0.3449328975467757
2012	0.8371248480669962
2013	1.217040953439566
2014	1.1019698743177841
2015	1.1969302682306748
2016	3.867164141198418
2017	3.4037278474991632
2018	6.306690232454772
2019	6.493369364701359
2020	6.493369332420347