Year	% of total merchandise exports
1960	6.539074960127592
1961	5.124450951683748
1962	4.977876106194691
1963	5.159474671669793
1964	6.050955414012739
1965	8.657718120805368
1966	11.884669479606188
1967	12.335092348284961
1968	15.75682382133995
1969	20.58117633719062
1970	26.90503289565
1971	26.373978700324358
1972	23.406123340776702
1973	22.480603417253242
1974	24.91587806462985
1975	25.233293618110142
1976	23.129507752088166
1977	22.335102707456496
1978	22.868112049414442
1979	16.40284950772565
1980	18.411500909224827
1981	19.368496696868327
1982	18.293381308178954
1983	14.309135346411814
1984	14.459292747206137
1985	11.829456573983718
1986	17.539315211015538
1987	17.17619328802774
1988	14.331240465531057
1989	27.971997667785498
1990	22.32446707141107
1991	25.182166914450377
1992	27.832431729868546
1993	26.548016314423435
1994	29.468021518230724
1995	21.630901287553648
1996	25.471698113207548
1997	25.958037107681637
1998	24.703419399860433
1999	31.089508437270723
2000	29.78669190145777
2001	35.12882129717043
2002	39.72079751346701
2003	42.84727506384364
2004	39.50468774024286
2005	40.12316409334817
2006	40.87100055976317
2007	42.109938382530274
2008	40.34875367804449
2009	37.91546578703572
2010	27.496375258981914
2011	24.736242251325763
2012	23.258298255694005
2013	24.587126959857642
2014	26.33809143425967
2015	26.728424323686696
2016	29.003675439994353
2017	25.103615384020788
2018	29.948246703043612
2019	27.852693482341863
2020	27.432306509325105