The average price of a gallon of self-serve regular  gasoline in the Inland Empire fell two-tenths of a cent today to $3.653, after  rising 16 times in 17 days.
      The average price in Riverside and San Bernardino counties is 2.5 cents  more than one week ago and 3.3 cents higher than one month ago but 6.2 cents  less than one year ago, according to figures from the AAA and Oil Price  Information Service.
      The average price rose 11.1 cents over the previous 17 days, including  four-tenths of a cent on Sunday, after falling to its lowest amount in exactly  one year, $3.544, on Dec. 27.