The OPEC daily basket price decreased by 25 cents to USD104.21 a barrel on Monday, compared with USD 104.46 the previous day, accordingto OPEC Secretariat calculations on Tuesday.OPEC's annual rate for the basket price in 2013 was USD 105.85 per barrel.The new OPEC Reference Basket of Crudes (ORB) is made up of the following:Saharan Blend (Algeria), Girassol (Angola), Oriente (Ecuador), Iran Heavy (IslamicRepublic of Iran), Basra Light (Iraq), Kuwait Export (Kuwait), Es Sider (Libya), BonnyLight (Nigeria), Qatar Marine (Qatar), Arab Light (Saudi Arabia), Murban (UAE) andMerey (Venezuela).