Gasoline prices in Texas jumped by 14 cents last week, the biggest jump since May of 2008, according to AAA Texas.

The statewide average price of a gallon of unleaded regular is now $2.47 and only 20 cents higher than this time last year.

Here in Austin, prices also rose 14 cents to $2.49 a gallon.

The increase is being prompted by higher oil prices, a large number of off-line refineries and higher gas demand.

Every city in Texas saw a double-digit price increase during the last week. Houston and Galveston had the lowest price for gasoline at $2.43, up 17 cents in Galveston and 16 cents in Houston. El Paso continues to have the most expensive at $2.51.