Year	% of total merchandise exports
1960	1.7107181165598613
1961	1.6801493466085875
1962	1.0729843988068413
1963	1.1194029850746268
1964	1.1426153195090987
1965	1.1811078651999496
1966	1.3555267616864346
1967	1.500385451784009
1968	1.3496739109018185
1969	1.2707855687852108
1970	1.3230404882269893
1971	1.2211650898267248
1972	1.2065551124805067
1973	1.1995603563996073
1974	1.6964344343029747
1975	1.7798144051483895
1976	1.7577081033459305
1977	1.3404902692462255
1978	1.0403169673930501
1979	0.9889549608463614
1980	0.7840211717927608
1981	0.8535761945015976
1982	0.9084185018246013
1983	0.9517177983338059
1984	1.1168920883738647
1985	1.1388575459285177
1986	1.0865095229424244
1987	1.1060447029268545
1988	0.9029443838604144
1989	0.9532567114341182
1990	1.1749213528292468
1991	1.2345994636400657
1992	1.333088414462887
1993	3.2877033857902185
1994	2.861637022236984
1995	3.3723999549974217
1996	4.006526113638686
1997	4.252432066855684
1998	3.97923613434922
1999	3.0602485515692397
2000	3.7204558264972656
2001	3.9030021101330603
2002	4.210122168387796
2003	4.62103266550174
2004	5.245865377000402
2005	5.872770903793373
2006	6.495179890849738
2007	6.8650713854494425
2008	7.465854575816831
2009	6.680891051211082
2010	7.011753713735888
2011	7.459383438796799
2012	7.675331182782835
2013	7.935933282186092
2014	7.213662602468493
2015	6.428905962069109
2016	6.175706905446174
2017	6.226199841156601
2018	5.915898750741548
2019	5.793354163249441
2020	5.688708697492542