4.1. The charges provided for in this Tariff shall be increased on 1 October of each year on the basis of the cumulative rate of increase in the general Consumer Price Index for Canada, as determined by Statistics Canada for the period beginning on 30 June and ending on 30 June of the year preceding the indexation.
The charges thus indexed shall be reduced to the nearest dollar where they contain a fraction of a dollar less than $0.50; they shall be increased to the nearest dollar where they contain a fraction of a dollar equal to or greater than $0.50.