NEW YORK (CNN/Money) - The price of gasoline continued its slow descent towards pre-Katrina prices Friday as it dropped about two cents, according to travel club AAA.

Diesel also fell two cents and is down 47 cents during the last month.

The nationwide average price for regular unleaded fell to $2.250 a gallon from $2.266 on Friday, according to AAA's "Daily Fuel Gauge Report." The price is down 26 percent from the record high of $3.057 reached on Labor Day, following Hurricane Katrina.

Gasoline prices, which have steadily posted declines of one to two cents per day recently, are down from $2.723 a month ago but up from $1.951 a year ago, AAA says, a year-over-year increase of 15 percent.

Retail diesel prices, which have still not come down as much as gasoline, fell two cents Friday to $2.725 a gallon from $2.743. Diesel prices are down more than 15 percent from a record $3.239 set Oct. 24, but they're up 25 percent from $2.174 a year ago.

Gasoline prices have steadily fallen on signs that the soaring expense of energy is finally starting to curb consumption within the U.S., the world's biggest user of fuel.

On a state-by-state basis, AAA says Hawaii residents pay the most for regular unleaded at $2.750 a gallon. Oklahoma has the lowest prices, at $2.017 a gallon.

The average price for a gallon of mid-grade gasoline fell nearly two cents Friday to $2.389, according to AAA. Premium unleaded also declined almost two cents, dropping to $2.476 a gallon.

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