Average retail gasoline prices in Ohio have fallen 9.8 cents per gallon in the past week, averaging $2.22 per gallon on Sunday, according to GasBuddy’s daily survey of 5,345 gas outlets in Ohio.

This compares with the national average that has fallen 4 cents per gallon in the last week to $2.33 per gallon, according to gasoline price website GasBuddy.com.

Across Delaware County prices ranged from $2.09 to $2.21 Monday afternoon.

Including the change in gas prices in Ohio during the past week, prices Sunday were 46.6 cents per gallon lower than the same day one year ago and are 4.7 cents per gallon lower than a month ago. The national average has decreased seven-tenths of a cent per gallon during the last month and stands 5.8 cents per gallon lower than this day one year ago.

According to GasBuddy historical data, gasoline prices on June 12 in Ohio have ranged widely over the last five years: $2.69 per gallon in 2016, $2.85 per gallon in 2015, $3.83 per gallon in 2014, $3.88 per gallon in 2013, and $3.70 per gallon in 2012.

“While the national average fell 5 cents per gallon in the last week, the bigger story is that 47 states saw average gas prices move lower in the last week, so this isn’t just a here and there trend, it’s almost everywhere,” said Patrick DeHaan, senior petroleum analyst for GasBuddy.