Average retail gasoline prices in Indiana have risen 9.0 cents per gallon in the past week, averaging $3.51/g yesterday according to GasBuddy's daily survey of 3,271 gas outlets in Indiana. That compares with the national average that has increased less than a penny per gallon in the last week to $3.43/g according to gasoline price website GasBuddy.com. Prices yesterday were 18.5 cents per gallon lower than the same day one year ago and are 5.1 cents per gallon higher than a month ago.