Year	% of total merchandise exports
1960	7.854924755155665
1961	6.297313035521171
1962	5.921536733666396
1963	5.104506232023011
1964	6.347631124343001
1965	6.1027759657896645
1966	5.98173176889945
1967	5.299061148422941
1968	6.061995274535388
1969	6.638324563543227
1970	6.613030446442656
1972	4.7536788227767115
1973	8.756260434056761
1974	8.879069725154332
1975	9.724926135452693
1976	8.598364993142475
1977	10.637201279030629
1978	9.578824377299977
1979	8.706029357051097
1980	10.698005254249608
1981	11.438413350731679
1982	12.284012502211477
1983	11.670620128769908
1984	11.470113085621971
1985	12.411022623158786
1986	11.697574893009985
1987	4.20505577684847
1988	13.223123149607542
1989	14.59229880812992
1990	12.506837984585268
1991	12.623747906993543
1992	12.727661305912367
1993	16.741303130538817
1994	25.531257166192706
1995	26.217448516443838
1996	15.545234371406194
1997	16.47052127391234
1998	20.609495390779703
1999	14.301493540796233
2000	18.273262403615597
2001	11.898689026296664
2002	15.479641733835138
2003	9.497521171088664
2004	14.365542035569012
2005	10.562970786694938
2006	12.214382126484994
2007	10.387530046261304
2008	10.13160411279916
2009	11.156840954612678
2010	11.425288922624063
2011	11.910134758367375
2012	11.558069424543662
2013	10.03348709835298
2014	8.798395223606537
2015	9.207401423148541
2016	8.852719926578786
2017	7.71757855221946
2018	7.099343631016045
2019	4.111014188878978
2020	5.797306459772127