tha ~tab immediately preceecliog thecorremitucemera of tbe secood (2") year of the permit term end tbc cormsencelocat ofeach etibregimotyear ofthe peur& terroundltbe sirih (C) year of the permit term *dl be tbc `barreert prioe index", (if). "Flz current prise Mclex sliet( be divided by the base price index aorl