Is world oil production peaking? Quite possibly. Data from the International Energy Agency (IEA) show a pronounced loss of momentum in the growth of oil production during the last few years. After climbing from 82.90 million barrels per day (mb/d) in 2004 to 84.15 mb/d in 2005, output only increased to 84.80 mb/d in 2006 and then declined to 84.62 mb/d during the first 10 months of 2007.