Year	% of total merchandise exports
1960	9.367088607594937
1961	0
1962	14.609571788413097
1963	9.00900900900901
1964	10.516888759035073
1965	12.922479715136303
1966	12.655409748679114
1967	7.289756753453124
1968	7.454589053414064
1969	9.16542378930998
1970	9.271060081431939
1971	9.199881121421258
1972	8.587366103560692
1973	8.707320335752264
1974	9.38445705668375
1975	9.425694079534114
1976	6.076316437139525
1977	12.468374504871992
1978	11.512713078116986
1979	11.469228779352118
1980	11.422389226741963
1981	14.374977162275728
1982	14.836279563137541
1983	12.99590679698405
1984	15.253146548331442
1985	18.195554251378237
1986	26.421346504572846
1987	9.400362917692993
1988	10.653223055037358
1989	8.677202823584413
1990	21.797753547337393
1991	20.059625340445344
1992	6.8588340449988365
1993	12.66588743197091
1994	13.175270216734539
1995	5.840444771465028
1996	5.6879339321787485
1997	7.107823507109691
1998	7.678798819999827
1999	7.657451298508319
2000	0.05294285790855424
2001	0.08307520641364333
2002	0.030113573236268537
2003	0.04583792787399596
2004	0.05548151984704896
2005	0.04933501376071853
2006	0.06741457609008578
2007	0.5140230422674189
2008	0.9247061161433231
2009	3.8824665011647075
2010	4.194113059528892
2011	0.03893634765269645
2012	0.024073242467487946
2013	0.9325338415860325
2014	0.7625624351679962
2015	0.5883300058519584
2016	0.40360438007270144
2017	0.23304223234469548
2018	0.2596702490713136
2019	0.13327082638954493
2020	0.12162129314250471