Year	% of total merchandise exports
1960	3.1905195989061075
1961	3.2314410480349345
1962	3.368940016433853
1963	5.007153075822604
1964	6.4890710382513666
1965	6.794055201698514
1966	3.8394415357766145
1967	3.690260133091349
1968	3.3802055164954026
1969	2.9678971295737764
1970	2.2887341367104646
1971	3.577546219338824
1972	2.803486286993147
1973	3.059997544381078
1974	3.4639532366313057
1975	5.053629708771901
1976	3.574649254053615
1977	4.079419272333503
1978	5.630511818358315
1979	6.967041000788216
1980	7.397445100803488
1981	8.202182712419665
1982	9.18292865865875
1983	7.564849460022452
1984	7.393550718929413
1985	7.3935507183220714
1986	7.393550719813318
1987	7.7507125636261485
1988	6.007075465760286
1989	6.007075466049655
1990	7.2642700297347345
1991	8.93177146536566
1992	27.231491179599683
1993	12.23732811717556
1994	9.117918828076151
1995	8.33460207115559
1996	8.924050612232804
1997	8.39670721158757
1998	11.557478662152734
1999	9.880091603441493
2000	12.197209802386883
2001	12.997635830143746
2002	11.344346888623754
2003	8.541501191082288
2004	8.560295202472973
2005	8.979199130439461
2006	11.235057513668295
2007	12.635291812139974
2008	13.286721216136002
2009	12.65942277167636
2010	15.628764282420276
2011	18.3915450234391
2012	17.70755263908236
2013	16.232097171674276
2014	13.584074952883526
2015	14.934452169843931
2016	16.40623774543841
2017	16.27053617332109
2018	16.921298579523274
2019	17.06537824208575
2020	14.33662400427827