Year	% of total merchandise exports
1960	9.302876080009469
1961	5.192672141503475
1962	9.505026084743607
1963	7.073386383731211
1964	9.284242083567557
1965	9.331993972877951
1966	10.088248954946586
1967	7.879219194794632
1968	9.535746515592098
1969	10.55689303507539
1970	12.397315125946353
1971	7.133169386690513
1972	6.046402362627528
1973	6.862461363925773
1974	8.001331842546614
1975	6.424236237425294
1976	8.729875032171352
1977	8.936928138333004
1978	6.318053070361961
1979	8.475236813411476
1980	9.06921946757099
1981	9.199593360596927
1982	11.025015156148093
1983	10.300972719905035
1984	6.616421466381141
1985	8.131668035810524
1986	7.431565548570024
1987	7.279694016394349
1988	8.229567208433876
1989	7.730488596182929
1990	9.254697256018988
1991	7.603323688240933
1992	5.760756551436595
1993	5.182648721857515
1994	4.9775602363718905
1995	4.6197631032431286
1996	4.609681927239838
1997	3.486709288037701
1998	3.087724528013546
1999	3.3454541541063665
2000	3.0302287931795027
2001	2.75931670591941
2002	2.146635805618517
2003	2.0185511438590833
2004	2.80835905031496
2005	2.5229281945931015
2006	2.4463754984854957
2007	2.851804692532656
2008	3.6675094632311676
2009	3.1436257092957285
2010	3.037151813359878
2011	3.2063128708883935
2012	2.972920759567064
2013	2.6643451916241494
2014	2.1953224146978987
2015	2.515460383075123
2016	2.2350540886963723
2017	1.966857688394014
2018	2.2994350253415665
2019	2.1824051367822244
2020	2.0298345891649516