Illinois, April 22- Average retail gasoline prices in Illinois have risen 12.7 cents per gallon in the past week, averaging $3.80/g yesterday, according to GasBuddy's daily survey of 4,378 gas outlets in Illinois. This compares with the national average that has fallen 1.6 cents per gallon in the last week to $3.50/g, according to gasoline price website GasBuddy.com.

Including the change in gas prices in Illinois during the past week, prices yesterday were 26.4 cents per gallon lower than the same day one year ago and are 9.2 cents per gallon lower than a month ago. The national average has decreased 14.5 cents per gallon during the last month and stands 34.7 cents per gallon lower than this day one year ago.