Year	% of total merchandise exports
1960	26.70964557821031
1961	24.65358842970195
1962	24.667979039010728
1963	25.66457225712905
1964	26.859584385317536
1965	26.3724808895066
1966	24.054269752593775
1967	26.446522501461132
1968	26.27677100494234
1969	26.377660803073223
1970	25.604739007375766
1971	22.679255504391904
1972	15.673074680700555
1973	15.229425849063807
1974	12.37498186550137
1975	9.905183442697371
1976	6.533254530691604
1977	8.716396723218423
1978	6.8229183896258565
1979	6.687326794153837
1980	7.192405751336241
1981	9.141412087267959
1982	6.796474766014751
1983	6.440700959015909
1984	6.134312434521006
1985	4.95637887560292
1986	3.1774245004329646
1987	2.990547163777267
1988	3.2074492747223635
1989	4.028240733148254
1990	3.9311874385129295
1991	4.5027698701712
1992	6.0524270349840155
1993	4.208612900956914
1994	3.279162640197799
1995	2.961153905306639
1996	3.545951957729115
1997	2.6076618989186597
1998	3.367327819575368
1999	2.749505769608132
2000	3.0745578311703348
2001	3.3355840471347715
2002	3.6724391076251175
2003	3.7058177394514966
2004	3.9333102306870433
2005	4.000517213667405
2006	4.827756257618246
2007	5.967469551161912
2008	7.728632270207031
2009	9.140508831474346
2010	7.4007873492604865
2011	7.840577293284119
2012	9.147848043772148
2013	9.342219525890398
2014	9.054811782029358
2015	6.775809861360613
2016	5.186064496657165
2017	5.4166588475658015
2018	4.558470206351913
2019	4.0089191832426065
2020	3.7037221694705877