Gas prices held stable during the night in record terrain, a every day survey by auto club AAA showed Wednesday.

The national average price for a gallon of usual gas remained unchanged at an all-time high of $4.108.

Retail gas prices have risen 38.5% over the last 12 months.

Alaska has the highest gas prices in the nation. Drivers in the state pay an average of $4.615 a gallon. Californians pay an average of $4.552 for a gallon of gas and Hawaiians pay $4.456.

The state with the lowest gas prices is South Carolina, where a gallon of gas averages $3.930.

Diesel prices rose overnight. The national average price for a gallon of diesel fuel increased six-tenths of a cent to an all-time high of $4.813, according to the AAA survey.