Year	% of total merchandise exports
1960	0.39404352806414666
1961	0.20496003279360525
1962	0.26535365745791195
1963	0.23949227637408693
1964	0.17298870801295627
1965	0.11355398266688103
1966	0.11924138630035712
1967	0.12922806187363586
1968	0.20637174953609894
1969	0.2299404419764215
1970	0.040355456663388016
1971	0.03536440717582254
1972	0.0416341255497873
1973	0.823939093455537
1974	1.0101815817135278
1975	0.9763103987081854
1976	1.5070173510970482
1977	2.2514117215312854
1980	6.677220046336001E-05
1981	0.0011196230125535144
1984	0.012181602701025751
1985	8.344213009172558E-06
1986	4.496052599013624E-05
1987	0.012004190951942667
1988	0.00017312918137586588
1989	0.02777707297660731
1990	0.008116067727988072
1991	0.2562999503550657
1992	0.14588747424878518
1993	0.1301833451690188
1994	0.6090636569636725
1995	0.41400208828372664
1996	0.8241719732588005
1997	0.9330961905469494
1998	0.6449909321809623
1999	0.6521012848447014
2000	0.8324199160604225
2001	0.8865560933268488
2002	0.7810867916398307
2003	0.6212942019597677
2004	0.5577310060549969
2005	0.9682373395794406
2006	1.344122258661606
2007	1.250794283160982
2008	1.1365395734230337
2009	1.4967729537276
2010	0.8463051888145265
2011	0.7010836848538318
2012	0.759747847443392
2013	0.7432573447090797
2014	0.6667676476496758
2015	0.921265843052189
2016	0.7832020713547506
2017	0.7433387088090396
2018	0.7188804141619287
2019	0.48261351576291056
2020	0.3597903574125234