The average price of a gallon of self-serve regular gasoline in the Inland Empire dropped nine-tenths of a cent Sunday for the second consecutive day.

   The average price in Riverside and San Bernardino counties of $4.11 is 3.7 cents less than one week ago but 1.4 cents higher than one month ago and 7.8 cents more than one year ago, according to figures from the AAA and Oil Price Information Service.

   The average price has dropped five consecutive days immediately after 11 increases in 14 days pushed the average price to its highest amount since May  19.

   The dropping pump prices are the result of a sharp decrease in the wholesale price, indicating a sufficient supply, according to Jeffrey Spring of the Automobile Club of Southern California.