Average retail gasoline prices in Indiana have risen 9.7 cents per gallon in the past week, averaging $2.27/g. That compares with the national average that has increased 12.6 cents per gallon in the last week to $2.17/g according to GasBuddy.com. Prices yesterday were $1.05 per gallon lower than the same day one year ago and 22.2 cents per gallon higher than a month ago.