(Dearborn, MI)  --  Gas prices keep going up.  Triple-A Michigan says the prices have gone up 26.7 cents per gallon over the past week.  The statewide average is now $3.44.  The auto club says the statewide average is 80.2 cents per gallon higher than at this time last year.  The lowest average price can be found in Saginaw/Bay City area and the highest average is in the Ann Arbor and Traverse City areas.