AURORA, Ill.--(BUSINESS WIRE)--Illinois and Indiana gas prices are back on the rise after dropping to their lowest levels since 2009. The Illinois average price for an unleaded gallon of gasoline is $2.30, up $.18 from a month ago, but still down from $3.37 a year ago. In Indiana, the average price is $2.32, up $.40 from a month ago but still down from last year’s price of $3.28. Nationally, gas prices declined a record 123 consecutive days to $2.03 per gallon before increasing last week for th