7.18.5. The rate of interest in Schedule III to the Act is applicable from 1 June of a given year to 31 May of the following year. The rate is determined by computing the arithmetic mean, for the 12-month period ending on 31 December of the preceding year, of the nominal rates of interest on negotiable bonds issued by the Government of Canada for a term of 3 to 5 years as compiled by Statistics Canada and published in the Bank of Canada Review under the identification No. V-122485 in the CANSIM System.