Year	% of total merchandise exports
1960	3.7984944991314418
1961	1.10218601683434
1962	0.47424515978733844
1963	1.8473482368347207
1964	2.591985699389245
1965	2.375339748296428
1966	2.4034628089759655
1967	2.50193570815315
1968	2.6457716962524658
1969	2.463948710584464
1970	1.8510587755074728
1971	2.290521957355127
1972	2.2165805975873742
1973	1.904861757292199
1974	1.9044713734804857
1975	2.2705750486413323
1976	2.0117114850085565
1977	1.867469507282556
1978	2.584551354615054
1979	3.2921838278528264
1980	3.015370570976148
1981	2.0968593331424183
1982	2.5449185864886132
1983	2.23907310871934
1984	2.4739808504156064
1985	2.7859789541954316
1986	3.7237531742763403
1987	3.0449472481114763
1988	3.5497349633670896
1989	2.8356783214653047
1990	2.361051198259021
1991	1.3887666723591168
1992	5.722910565798185
1993	6.566670737488082
1994	4.686677872155361
1995	4.2350108054274385
1996	5.064990692045818
1997	4.390210102711862
1998	3.292320795912703
1999	3.8590990324292163
2000	4.368951050698993
2001	4.172307904558884
2002	5.151767072696246
2003	5.080328407255867
2004	4.604581091593643
2005	4.403651842001959
2006	4.26376500883835
2007	4.150688695526864
2008	4.114754332078966
2009	4.9217479169896725
2010	5.557661984549206
2011	6.3816355626477845
2012	6.869541949573881
2013	7.110018935845555
2014	6.845567454261167
2015	6.5645945377782695
2016	6.489585083485356
2017	6.987682166507514
2018	7.904841141790827
2019	8.229956713873879
2020	8.389780773854232