MANAMA: Saudi Oil Minister Ali al-Naimi called for sustained investment in new output capacity on Thursday despite the slump in world prices. Naimi said global production lost four million barrels per day due to natural depreciation and predicted an increase in demand of one million bpd. “The oil industry is required to add new production capacity of five million bpd to compensate for the natural loss in production and meet the growth in global demand,” he told an energy conference in Manama. “Large investments are required to meet such needs. We must continue and even increase the pace of investments in the energy sector.”