Year	% of total merchandise exports
1960	1.367365542388332
1961	2.0908725371934054
1962	1.936426744610888
1963	1.7459640245485168
1964	2.195926295656032
1965	2.744580510234425
1966	2.4861468491073935
1967	2.162502225651374
1968	2.435366840045106
1969	3.1160262785583215
1970	2.55295500199721
1971	3.324738908121732
1972	3.532378269481088
1973	0.712292576068815
1974	2.5205986922808057
1975	2.816702897685196
1976	3.6626336280546927
1977	2.6954709891078723
1978	3.296350433899775
1979	2.2279508640225703
1980	3.3579131775294258
1981	3.250181833573769
1982	1.6216127948360786
1983	1.8149231122370995
1984	1.6076762677121486
1985	1.6601989927915772
1986	2.1349010200387575
1987	1.8882842916646956
1988	0.8541272297800498
1989	0.9313567718498315
1990	0.9767955246877281
1991	1.137793687584871
1992	1.2222788772153663
1993	1.2532406756573555
1994	1.3081209776148919
1995	1.281364416081064
1996	1.3235632464983238
1997	1.1470120207307801
1998	1.4725404827277961
1999	1.198363066086342
2000	5.334417357748151
2001	5.888924883825642
2002	6.4821080953736665
2003	5.7654663246802516
2004	6.143561854174414
2005	4.6999711114063505
2006	5.070181206499232
2007	4.734117314287975
2008	3.8543696586089555
2009	6.6421880992491245
2010	4.7082384284367
2011	4.464664732470182
2012	3.7182639229035765
2013	4.8496122144495954
2014	4.663376132624355
2015	5.612807129043234
2016	6.544552860829113
2017	5.14791681876454
2018	4.224424587713855
2019	4.811191901371858
2020	5.3601852795938