Oil prices slightly went up during the week with the WTI benchmark settling at US$56.87 while the Brent benchmark traded at US$66.65 on Tuesday. The slowdown in demand for petroleum, together with renewed oil stockpiling in the US and the issuing of waivers to eight countries to buy Iranian oil after imposed sanctions, pushed the price of Brent down from US$80 per barrel in October 2018 to US$66.65 on Tuesday.