Why according to OPEC have oil prices risen drastically recently?

dem speculatorsWhy according to OPEC have oil prices risen drastically recently?
Supply and demand.





Oil supply grows slowly, at about 1% a year for the last few years. Also, new oil finds, like Canadian oil sands, are much more expensive to extract, and higher prices are needed to cover these higher costs.





Oil demand has historically been linked to Global GDP growth, which has been between 3 and 4% each year. This relationship has begun to fall apart in the last few years, but it still shows how strong the increase in demand could be.





So, essentially, oil prices move with supply and demand, like all other markets.Why according to OPEC have oil prices risen drastically recently?
they only went up 2 cents