Year	% of total merchandise exports
1960	1.0414539513988157
1961	1.3173417223751476
1962	1.93645422071818
1963	2.1602658788774
1964	4
1965	2.8932829310846175
1966	3.8614423622941514
1967	5.565773340339814
1968	2.3469387755102042
1969	2.832355429921055
1970	3.5916945574791614
1971	3.815699233119272
1972	2.8453193678107174
1973	2.9029793735676184
1974	2.0927136286613415
1975	6.30611102079156
1976	10.635863479234626
1977	9.581283074923405
1978	12.07716874144561
1979	11.395871674483313
1980	9.011181290542847
1981	9.415485829959515
1982	8.91137060754453
1983	9.30181772804792
1984	8.61013986013986
1985	9.360642693976027
1986	8.768987267014728
1987	7.98797879060508
1988	8.549420908471559
1989	6.513460910772355
1990	6.4683038132223984
1991	6.945730282590485
1992	6.579922313553713
1993	5.339852052607351
1994	4.564196223881261
1995	5.723956601891867
1996	11.38432325197724
1997	9.97611198884019
1998	11.491636436614181
1999	7.576453417771931
2000	6.270875581147675
2001	7.418865089446871
2002	7.190007164303176
2003	1.625095041531298
2004	1.5872188474974978
2005	1.771243484338458
2006	1.7254421812534928
2007	1.956186640481155
2008	2.877538319838056
2009	2.2704475810806004
2010	1.3431650178877577
2011	1.5366726912488926
2012	1.4611055662729007
2013	1.300227953956983
2014	1.1699878841164202
2015	1.0880034068604552
2016	0.8565214521786345
2017	0.6858891925029564
2018	0.7043819060852969
2019	0.8383012411065011
2020	0.5179373109600306