Michigan’s average gasoline price fell 24 cents from last week to $4.69 per gallon, according to AAA Michigan. The statewide average was 43 cents higher than a month ago and $1.65 above last year, while filling a 15-gallon tank cost about $70. Ann Arbor had Michigan’s highest average at $4.73 per gallon, and Flint had the lowest at $4.59. In southwest Michigan, prices ranged from $4.58 in St. Joseph County to $4.80 in Barry County. The new statewide figure revises an earlier report of $4.67 per gallon; the earlier report also placed Michigan diesel at $6.77, compared with $3.66 a year earlier.