Ioli ekrwada, i-oyile ekrwada ye-WTI yawa ngaphezu kwe-4%, kubandakanywa ioli ekrwada ngaphantsi kwe-80 mark, i-low entsha ukususela ngoJanuwari 4 kulo nyaka, ngelixa i-oyile yase-US yawela ngokuthe ngqo ngaphantsi komnyaka ophantsi;Ukusukela kushicilelo lweendaba, ekuqaleni kukaDisemba, phantsi kwemeko yokuba iiyunithi ezininzi zemveliso zifakwa kwimveliso, i...
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