Year	% of total merchandise exports
1960	28.74493927125506
1961	11.131221719457017
1962	12.903225806451612
1963	13.566507684154743
1964	13.969335604770016
1965	15.945465323058682
1966	14.690265486725664
1967	16.160310277957336
1968	14.507462686567163
1969	24.38056523422377
1970	14.267415508917134
1971	25.331713244228432
1972	28.235826401698393
1973	28.202717716434496
1974	29.365939488212568
1975	39.669243755309196
1976	30.56598813190115
1977	25.49382948303107
1978	20.976355367690065
1979	10.511975283112966
1980	10.205766393228734
1981	8.641064920977763
1982	16.002723867892406
1983	16.056893773499155
1984	14.580208681765702
1985	19.84381391997753
1986	38.24468886545126
1987	28.01269513230247
1988	33.10408326928577
1989	39.02480604779095
1990	33.80257719762804
1991	20.038664540292306
1992	4.570315441803902
1993	5.747175876684874
1994	3.841962336643566
1995	3.1997843746533285
1996	52.79572359118148
1997	53.744945331440064
1998	5.330734434917702
1999	3.528162924408819
2000	0.3694480430369433
2001	0.31145409106758554
2002	0.009771955001741963
2003	0.02324750968924275
2004	0.02700882018620827
2005	20.973099998473423
2006	15.75378098180558
2007	12.094221317557711
2008	8.085602999500455
2009	12.171229545487128
2010	12.261844101474589
2011	9.677655965938643
2012	22.125691599885087
2013	10.17587152449532
2014	6.894036751537268
2015	5.514192899027431
2016	5.014687381895841
2017	5.843617497713946
2018	4.3652147664396335
2019	4.36521462937247
2020	4.3652144715852526