FORT WAYNE, Ind. (WOWO): The national average for gas prices has gone up for the 12th week in a row. However, there is hope on the horizon, as gasbuddy.com anaylst Patrick DeHaan says we should be hitting a peak, as oil refineries end seasonal maintenance, and the switch to summer gas is almost complete. This comes as gas prices Sunday in Fort Wayne averaged $3.76/gallon, nearly a quarter higher than the same day a year ago.