The basket oil price of the Organization of the Petroleum Exporting Countries (OPEC) stabilized at 58.32 dollars Thursday after a sharp climb earlier in the week, the Vienna-based group announced Friday, according to DPA . The price for one barrel (159 litres) of OPEC-produced crude oil eased by 0.15 dollars Thursday. On the previous two days, it had climbed by 2.61 dollars. OPEC's 12 member countries produce over a third of the world's oil supply.