Year	% of total merchandise exports
1960	90.01584786053883
1961	76.84964200477327
1962	71.32784000186479
1963	65.21739130434783
1964	58.48341232227489
1965	61.323392357875115
1966	63.1154879140555
1967	59.937156323644935
1968	64.20640104506859
1969	69.5488561952547
1970	85.74353155908541
1971	70.67247078600238
1972	73.74437469544529
1973	75.95760315304283
1974	68.56531523222785
1975	62.89044548030161
1977	76.8573001217139
1981	74.30640921456832
1982	64.52739218774737
1983	67.84940906787355
1984	78.58134622187126
1985	70.29332478178729
1986	70.23188353687807
1987	65.14175168431068
1988	60.01172955182214
1989	57.22820896976756
1990	70.97061744002235
1991	72.64311309144978
1992	74.38089568282102
1993	67.49944372001897
1994	58.00602080037963
1995	62.21061992598755
1996	53.88221972558629
1997	61.613881230857274
1998	44.05394360441357
1999	40.62730627306273
2000	36.67304766190425
2001	70.47900477488403
2002	63.85352489649361
2003	66.08335436775333
2004	69.42273912365042
2005	67.5647261792885
2006	69.21738181399195
2007	69.3232014765739
2008	62.119921370787104
2009	55.56895754619809
2010	64.95624616288104
2011	57.64016002999337
2012	48.090778768135
2013	48.584466149996054
2014	57.85956240053923
2015	57.387218816020635
2016	44.248704984380915
2017	35.587515540032115
2018	42.9227489382666
2019	47.00523137592641
2020	39.73110359288835