Year	% of total merchandise exports
1960	37.755102040816325
1961	40.67796610169492
1962	45.25547445255474
1963	46.40522875816993
1964	38.11881188118812
1965	45.794392523364486
1966	36.332179930795846
1967	32.587859424920126
1968	26.666666666666668
1969	32.41943241943242
1970	37.470657276995304
1971	32.30337078651686
1972	30.609243697478995
1973	30.821559392987965
1974	24.52239681815218
1975	27.903014416775886
1976	25.989955572725513
1977	25.825476429287868
1978	21.285467303976404
1979	23.748033069410795
1980	29.27050831391445
1981	46.25085523031121
1982	29.223422368841117
1983	15.969595847237672
1984	27.126787306884548
1985	28.44776473378394
1986	20.37154474419707
1987	26.2354488710709
1988	20.81013253862442
1989	22.969379391481034
1990	26.88641927762294
1991	23.12462758745226
1992	17.822832179413815
1993	21.09561396257238
1994	23.943647270522966
1995	31.471150254686542
1996	23.267168519494632
1997	28.130419103616532
1998	26.121756637882225
1999	20.833413597599264
2000	23.19344027500207
2001	32.52263603167475
2002	31.225429337148785
2003	27.646532221648844
2004	29.291883613867636
2005	29.043396375412406
2006	23.962053827646937
2007	24.70203215725917
2008	25.553224279031454
2009	31.923916038730226
2010	30.06554139389848
2011	29.14168045862381
2012	28.01125181485612
2013	29.60636267387658
2014	27.025521702165328
2015	20.15581161468186
2016	17.074634125901913
2017	17.712845062547963
2018	19.78649359339666
2019	18.547491920098153
2020	17.641273556009605