World proven crude oil reserves are estimated at almost 1.3 trillion barrels, of which OPEC Member Countries hold approximately 79 per cent.

OPEC's Members in 2008 produced around 33.1 million barrels per day of crude oil, or 45.9 per cent of the world total output, which stood at about 72.0 million barrels per day.

At the rate of production in 2008, OPEC crude oil reserves are sufficient to last more than 85 years.