Year	% of merchandise exports
1962	1.4056542277054902
1966	6.4959185898969665
1970	4.879327460970309
1971	4.114976906902102
1972	0.8048494936946251
1973	1.5292240452347903
1974	0.775630913911322
1975	2.936629299353623
1976	2.166400654495641
1977	2.872792913877925
1978	0.551779087759914
1979	0.2829980247232981
1980	0.5082250903132625
1981	0.3597601342083784
1982	1.338886179835172