Year	% of total merchandise exports
1963	0.42796005706134094
1965	0.14388489208633093
1966	0.5586592178770949
1967	0.5737346966434261
1969	0.6118411411264716
1972	0.8632122103537241
1973	2.2230467374352263
1974	1.266102797657775
1975	1.5498463495225938
1976	1.4457539391410283
1977	2.189457010829126
1980	0.027144975047503704
1982	1.5113928839239712
1983	0.15864419792836817
1984	0.2892848096010268
1985	0.14773250430149285
1987	0.0270415128010098
1988	0.07418240615571386
1989	0.1869903967187332
1990	0.4041838020162444
1991	0.749279352323181
1992	1.6153458674751018
1993	0.5147029080898929
1994	14.442063499316104
1995	10.82918698015428
1996	12.57040029451009
1997	2.2344020930804604
1998	0.6566518169003449
1999	3.4599979736613675
2000	1.6227583797457836
2001	1.3517775020935021
2002	1.3593454103892657
2003	1.8272089241315022
2004	1.6514333568533404
2005	1.687996519362296
2006	1.5083526766299264
2007	1.1317939372525154
2008	0.359683534660454
2009	0.8898899119647542
2010	3.042365345144562
2011	1.5623660688980914
2012	1.5685138557683573
2013	5.422270666376396
2014	3.7257077335890676
2015	1.8438291805406046
2016	3.149493929312724
2017	3.329375709871554
2018	3.459873754097348
2019	3.702938539803168
2020	7.233217409781996