Year	% of total merchandise exports
1960	5.047318611987381
1961	1.0471204188481675
1962	11.796733212341199
1963	16.281755196304857
1964	2.5773195876288657
1965	3.7339556592765457
1966	5.018065034122842
1967	3.005635566687539
1968	1.8025939766981753
1969	2.4895599100546097
1970	3.147268408551069
1971	3.073770491803268
1972	3.96045683409063
1973	4.535737522074542
1974	6.000089553575426
1975	9.795436664044061
1976	1.9158975422586333
1977	1.3554801405240793
1978	1.2157161687868248
1979	1.42655724185632
1980	4.659590694580631
1981	5.736113396488094
1982	5.786842961272913
1983	5.018949847297347
1984	3.9074755718694574
1985	4.370920831531374
1986	3.5136067128365758
1987	2.5167228498060887
1988	2.6696582125842605
1989	3.0483882431246947
1990	9.04478420298183
1991	3.4823653454447614
1992	3.465498360520776
1993	5.463782977533327
1994	6.065389396420749
1995	5.6056280121513895
1996	6.771436248629256
1997	5.859854288093256
1998	0.5406574109623072
1999	0.7051237510248892
2000	0.6836070229238177
2001	1.085355625981005
2002	0.6682509631358889
2003	0.8079615477130659
2004	0.6043736806636584
2005	0.8117230619575503
2006	0.8280515245730735
2007	1.124698753815195
2008	1.3943406246888173
2009	3.2453985928209645
2010	1.9787904889533088
2011	1.669323737092752
2012	1.041862579991604
2013	1.5505696400491753
2014	1.6857858823221255
2015	1.6566737374159184
2016	1.5269171678528286
2017	0.15079373552113248
2018	0.04527399869243926
2019	0.03757192196121651
2020	0.030097123361689425