Year	% of total merchandise exports
1960	6.235342805904263
1961	5.725137150091434
1962	7.044556479084344
1963	7.513586956521739
1964	9.818715288693284
1965	9.31440076295433
1966	15.285304430985017
1967	10.170594188231892
1968	11.465337060260381
1969	11.83676053217417
1970	8.216914148957981
1971	8.161056833379273
1972	7.298179925009335
1973	6.634161472620997
1974	6.341938847208686
1975	7.108333224708996
1976	6.4026643959094285
1977	6.6877756240465995
1978	5.83480158914708
1979	7.665199205758526
1980	7.391996709905473
1981	7.306493567822189
1982	6.991909437232986
1983	4.350036752591691
1984	3.9003525356197692
1985	4.421132994253525
1986	4.173719001150323
1987	2.9838637426958803
1988	2.5119435219781407
1989	2.6884022761641364
1990	2.7711415393692636
1991	2.7220469277100583
1992	3.5018083240272486
1993	4.464780615093633
1994	4.830351065589825
1995	4.232251925021484
1996	4.436333495857655
1997	4.906755038279269
1998	5.305745944189491
1999	4.884209927272026
2000	4.588436657447511
2001	4.714208619004339
2002	4.171045565836979
2003	3.713861725731698
2004	3.6408426034141876
2005	3.7098603170151545
2006	3.890233647160117
2007	3.915899250954067
2008	3.9236849301294736
2009	3.7383106508511537
2010	4.16733452077632
2011	4.185809110842108
2012	4.610949464771
2013	5.065936450769129
2014	4.813881343961939
2015	4.931219899884154
2016	4.331166636089951
2017	4.681914829234096
2018	4.446157442451998
2019	4.21370047362717
2020	3.6193875856228526