Average retail gasoline prices in Indiana have fallen 12.9 cents per gallon in the past week, averaging $3.43/g yesterday according to GasBuddy's daily survey of 3,271 gas outlets in Indiana. That compares with the national average that has fallen 4.2 cents per gallon in the last week to $3.39/g according to gasoline price website GasBuddy.com. Prices yesterday were 5.0 cents per gallon lower than the same day one year ago and are 2.7 cents per gallon lower than a month ago.