PHOENIX (AP) — Gasoline prices around Arizona dropped slightly at the pumps this week. Officials with Triple-A Arizona said Thursday that the average statewide price for unleaded regular gasoline is $2.13 per gallon, down by almost a penny from last week. This week's national average is $2.19 per gallon, up by more than 4 cents from last week. Triple-A analysts say the price of crude oil is hovering around the $50-a-barrel range, which is higher than recent months and causing prices to rise slightly in most regions. Tucson currently has Arizona's lowest average gasoline price at $1.95 a gallon and Flagstaff the highest at $2.30. Missouri has the lowest average gas price among states in the continental U.S.