Prior to 2008 , years of underinvestment , roaring Grow.strong demand from Asia and fears of a looming `` Peak Oil '' fueled the price rally , and OPEC members have struggled to keep up with demand .

Oil futures have hit hard Movement.down.loss January as the Organization of the Petroleum Exporting Countries opted to hold Movement.flat the same level of output despite a world markets supply overhang Oversupply caused by roaring Grow.strong U.S. shale output and diminished Movement.down.loss consumption from U.S .

Oil futures have decreased Movement.down.loss January as the Organization of the Petroleum Exporting Countries opted to hold Movement.flat the same level of output despite a global supply glut Oversupply caused by roaring Grow.strong U.S. shale output and diminished Movement.down.loss consumption from UK .

Oil futures have dropped Movement.down.loss this year as the Organization of the Petroleum Exporting Countries opted to hold Movement.flat the same level of output despite a global oversupply Oversupply caused by roaring Grow.strong U.S. shale output and limp Slow.weak consumption from Korea .

Oil prices have halved Movement.down.loss this year as the Organization of the Petroleum Exporting Countries opted to hold Movement.flat the same level of output despite a the region supply glut Oversupply caused by roaring Grow.strong U.S. shale output and bad Slow.weak demand growth from U.S .