Average gasoline prices fell in slightly more than half of the states over the last week, with the Great Lakes region seeing the largest declines after a major refinery successfully restarted. Gas Buddy says diesel in the Great Lakes should also begin easing. With oil holding below $100 per barrel, many Americans may see modest declines ahead for gasoline and slight drops for diesel. Average gasoline prices in Minnesota have fallen 7.0 cents per gallon in the last week, averaging $4.32 per gallon. The national average price of gasoline has fallen 1.6 cents per gallon in the last week, averaging $4.42 per gallon. The national price of diesel has decreased 4.1 cents compared to a week ago and stands at $6.44 per gallon.