43. The CPI for a year is the yearly average computed on the basis of the monthly Consumer Price Index in Canada established by Statistics Canada for the 12 months preceding 1 September of the year preceding the year for which the Index is computed.
Where, on 1 September of a year, the data furnished by Statistics Canada are incomplete, the Société may use the data available at that time to establish the Consumer Price Index.
Where the yearly average computed on the basis of the monthly Consumer Price Index includes more than one decimal, only the first digit is retained and it is increased by one unit if the second digit is greater than 4.
Where the ratio between the Consumer Price Index for the current year and that for the preceding year includes more than 3 decimals, only the first 3 digits are retained and the third digit is increased by one unit if the fourth digit is greater than 4.
Decision 2007-03-28, s. 43.