Year	% of total merchandise exports
1960	10.341951626355296
1961	6.129433727442439
1962	9.163379355687049
1963	10.202286719437115
1964	11.530547080110694
1965	12.164879356568365
1966	11.475924414589741
1967	13.418464900300464
1968	17.40213132163914
1969	15.05680759918048
1970	13.354433236296344
1971	10.806166084237631
1972	14.799126007461918
1973	15.288623956522803
1974	17.551264437999286
1975	24.10526422441598
1976	22.446133926496465
1977	19.081542193745655
1978	18.56302859695878
1979	19.50638910337427
1980	18.353397990502053
1981	15.53352379222547
1982	15.83628726081059
1983	11.33261865564021
1984	16.643066827836297
1985	18.41496894372949
1986	21.54106385245531
1987	17.483140908826474
1988	15.96948519955563
1989	20.70020989805669
1990	20.136245032185045
1991	21.324544342774306
1992	23.598076423595053
1993	31.454555924056944
1994	32.12789556683144
1995	34.9554549525212
1996	35.24843047133898
1997	37.82931929561871
1998	37.33656951169888
1999	32.40210718424416
2000	33.891012741944024
2001	31.70211209453353
2002	27.786288710208012
2003	24.329172496606695
2004	26.27018346924449
2005	25.407210729933627
2006	28.039804996238395
2007	28.351243938507846
2008	27.8750721144332
2009	29.452097497783292
2010	30.790801075521685
2011	30.522821387784703
2012	31.198535041203186
2013	30.992566770739316
2014	29.18060884535334
2015	25.575089165756165
2016	23.536475605978012
2017	24.838106763517253
2018	27.50896787959669
2019	25.257836869076954
2020	23.20437620411957