Year	% of total merchandise exports
1960	8.06682347278019
1961	7.60814713755151
1962	9.142882706005768
1963	13.412381206818392
1964	11.655255249427906
1965	12.285142111657391
1966	13.31135601223632
1967	12.617413048206078
1968	15.332958190101047
1969	11.771326927633002
1970	13.268245627869732
1971	8.819258854844815
1972	9.84432226572223
1973	9.754133423689069
1974	10.232061455725711
1975	14.476458649398285
1976	10.158541984458656
1977	10.38107480154758
1978	13.28105759769127
1979	15.682850246978308
1980	16.990430409306224
1981	14.390589196881356
1982	10.000654885346421
1983	14.377401476113189
1984	15.188323886258392
1985	15.829394578366324
1986	17.073725968633003
1987	18.478654183898456
1988	16.213114361919715
1989	17.398177884370863
1990	13.26753779408131
1991	14.626903293008658
1992	14.478618181930521
1993	9.397698330050394
1994	14.241197097482141
1995	12.397978528414852
1996	12.437285669350635
1997	5.385951743112257
1998	5.7393457259757215
1999	4.525984707478853
2000	8.74901144666289
2001	8.949126836722426
2002	8.71279299689547
2003	6.814458203485489
2004	6.319889833705707
2005	5.326575471903855
2006	4.982002911670808
2007	4.470011090244097
2008	4.918731024884468
2009	4.080055642098252
2010	4.121972719584974
2011	3.7592971884600916
2012	3.2909627082941566
2013	4.32180238930166
2014	4.613572400497959
2015	3.208870586586526
2016	3.2540081012810558
2017	1.7506036918033212
2018	2.378390064499663
2019	0.9521156415756842
2020	1.1728266914001046