AAA Michigan says gasoline prices are up about 9 cents per gallon during the past week to a statewide average of $3.41.
The auto club says Tuesday the average is about 28 cents per gallon higher than last year at this time.  
Of the cities it surveys, AAA Michigan says the cheapest price for self-serve unleaded fuel is in the Marquette area, where it's $3.34 a gallon. The highest average can be found in the Ann Arbor, Benton Harbor, Lansing, Saginaw and Bay City areas at $3.43.
Dearborn-based AAA Michigan surveys 2,800 Michigan gas stations daily.