Year	% of total merchandise exports
1960	13.240418118466899
1961	16.497701861329332
1962	17.85041981653569
1963	18.146756575182263
1964	16.83711398203773
1965	15.108993490060563
1966	10.670608244917794
1967	8.068794032324906
1968	6.7275136169586345
1969	8.796105451190545
1970	10.044163841632196
1971	14.185093682385256
1972	15.707189117667541
1973	17.517937731851582
1974	4.016892150568667
1975	6.356860530773574
1976	2.7519605794295896
1977	3.1140528582236455
1978	1.9244312500243295
1979	2.31426631700856
1980	5.368692568112204
1981	2.0482179023934
1982	7.295545232926223
1983	6.2710353282068425
1984	11.691462659418837
1985	12.329975895316805
1986	4.610932800930027
1987	10.799719983073604
1988	13.855779127373072
1989	14.077268038726986
1990	12.531342940934609
1991	9.362938510574297
1992	10.343618612462784
1993	7.438610282834566
1994	1.2416702681062632
1995	3.7841853705867123
1996	2.1261928538396915
1997	2.5829375890047745
1998	4.7941924882713876
1999	8.422152879471371
2000	3.9772598544984628
2001	3.1600711460307074
2002	3.7801963957289186
2003	5.950358961262082
2004	7.728044295861125
2005	5.652540835505981
2006	5.974887551467542
2007	2.70412198380398
2008	4.208016659255567
2009	2.7059303492245332
2010	1.90048140074187
2011	1.5923436126204455
2012	1.0138272842447242
2013	0.6404916364585662
2014	0.37380698717001665
2015	0.43814567500963675
2016	7.634984372158573
2017	1.4523708976874434
2018	0.09378049368325628
2019	0.032504501199841065
2020	0.11725326977143871