Year	% of total merchandise exports
1960	2.876484458915734
1961	3.9352823114071076
1962	4.620341382795747
1963	5.353846266662023
1964	5.863885674807847
1965	6.487291227247007
1966	5.825241572480007
1967	6.468569608953077
1968	6.043422626911578
1969	8.491344965559335
1970	8.991604932351121
1971	8.428336521507518
1972	12.232902470775421
1973	12.172472366444408
1974	11.73298501941927
1975	6.912567119250647
1976	4.831495627122192
1977	5.45873394063661
1978	5.943142599303278
1979	6.298675958954178
1980	7.078508679601328
1981	6.959282709379639
1982	6.636101742111546
1983	4.511447508198297
1984	4.8456437440104105
1985	4.995932551064213
1986	4.665067037347911
1987	5.473646026685907
1988	4.37121275945219
1989	4.589818754409315
1990	4.285045328716356
1991	4.369626983210238
1992	5.3475744766651925
1993	5.471993416779545
1994	5.823595663566484
1995	5.344183650836562
1996	6.143279422124534
1997	5.428610892181605
1998	5.454203799242418
1999	5.287770715991136
2000	11.679603445211297
2001	11.4526717815903
2002	11.971626460583225
2003	11.109297390089656
2004	11.652267189752008
2005	10.135383298017127
2006	9.412482925149824
2007	8.51720020884959
2008	8.1917386287898
2009	9.57105453589798
2010	9.463267525084728
2011	9.821021875665265
2012	10.366166260957941
2013	10.455473162645431
2014	10.919646206796523
2015	11.091928189949916
2016	11.866504548068715
2017	10.976323651805632
2018	10.208222228827141
2019	10.792912473408336
2020	11.872262269661045