The average price of a gallon of regular gasoline nationwide went down in the past week again.  Gas went down from $2.11 per gallon to $2.05, while it was at $2.81 per gallon one year ago.  There was nice decrease in Illinois as well for the past week, as it went down from $2.08 per gallon of regular gas to $1.98.  It was also down in Nashville going from $1.94 per gallon of regular gas to $1.89 per gallon.