RIVERSIDE, Calif. -

The average price of a gallon of self-serve regular  gasoline in the Inland Empire fell today for the 13th time in 14 days,  decreasing three-tenths of a cent to $4.118.
      The average price in Riverside and San Bernardino counties is 1.2 cents  less than a week ago, but 2.3 cents more than one month ago and 21.9 cents  higher than one year ago, according to figures from the AAA and Oil Price  Information Service.
      The average price has decreased 3.7 cents over the past 14 days,  including one-tenth of a cent on Saturday.