Year	% of total merchandise exports
1960	8.145766345123258
1961	5.699481865284974
1962	4.623287671232877
1963	3.697996918335912
1964	5.011565150346945
1965	4.8647419868151855
1966	5.8044660750071575
1967	6.236953634005936
1968	13.41257236538757
1969	9.859616898451849
1970	15.715644317641464
1971	14.923651796835355
1972	6.302867438238617
1973	9.501642421398405
1974	5.199334513652257
1975	6.132327484880217
1976	8.690213217421597
1977	7.054607579640394
1978	9.196174821414855
1979	30.271115745568306
1980	29.255396262886595
1981	28.312738409696607
1982	26.497623709629924
1983	15.910947895809576
1984	18.48787048413415
1985	21.31875922783856
1986	15.91742358641782
1987	16.756981241587734
1988	25.13034197339647
1989	10.7679578578762
1990	19.31990237806385
1991	14.521872699497685
1992	15.641850003582212
1993	3.719866827145144
1994	5.553330942720149
1995	5.368920837218787
1996	4.726728272468097
1997	4.142916506959827
1998	2.2489971219422227
1999	1.7529643125523557
2000	5.964409031144554
2001	4.975130792907331
2002	2.277649018017747
2003	1.4865366654794845
2004	1.86120418226609
2005	1.5616260476250108
2006	2.7440695879463965
2007	7.136074494486039
2008	4.126645590445722
2009	4.883250612754576
2010	6.663139403211324
2011	7.151683433607708
2012	4.340469146765594
2013	2.1734990686482893
2014	2.450185156220708
2015	2.1844615795834073
2016	1.0977245903014956
2017	0.4341095686397621
2018	0.4218810673191826
2019	0.34595733330356876
2020	0.34696190184026654