Year	% of total merchandise exports
1960	7.4141515303257925
1961	7.125610998715241
1962	6.773463596853562
1963	7.81949936314629
1964	8.558747537056274
1965	7.613374530885626
1966	7.605126339675682
1967	5.8526347420661935
1968	5.687557994533293
1969	5.523234673841902
1970	6.217544866043881
1971	5.924698364099641
1972	6.855460515402334
1973	7.328746665010451
1974	6.587996329416587
1975	7.853294650012434
1976	8.186897481553407
1977	7.720106796667095
1978	8.154423714864777
1979	8.825422604894912
1980	7.91181804117614
1981	7.696103892563364
1982	7.730799738251583
1983	6.428183333888561
1984	6.564428932960174
1985	6.187324094115356
1986	5.571577080997496
1987	5.328604625389212
1988	5.369446151239378
1989	5.102008010754371
1990	4.095519311461333
1991	4.3165186604020525
1992	3.622132302008392
1993	2.861892763315593
1994	2.6383152410142006
1995	2.7402193918405575
1996	2.52578103510986
1997	0.9860056025057566
1998	1.0130732308435348
1999	0.7646705470648528
2000	0.745999769405657
2001	0.7983454654191736
2002	0.6756829279967422
2003	0.4681021687406099
2004	0.6394054870696794
2005	0.7699725042978441
2006	0.8954531390772027
2007	0.9436961299800434
2008	1.0443973119744603
2009	0.9961427254420454
2010	0.9426195805531903
2011	0.8643611055946212
2012	1.0668322918264825
2013	0.8436601067952856
2014	0.7117241644372585
2015	0.6012570216124673
2016	0.4741530989334805
2017	0.30985782499666803
2018	0.39555756380025436
2019	0.16277168920827723
2020	0.14690476297072202