40.1. If the amount of average weekly salaries and wages of the Industrial Composite in Canada for a month ceases to be published by Statistics Canada under the Statistics Act (Revised Statutes of Canada, 1985, chapter S-19), the Government may, by regulation, prescribe another measurement of average weekly salaries and wages for that month, using the data published by Statistics Canada under the Statistics Act. The amount of average weekly salaries and wages of the Industrial Composite in Canada for that month is then deemed to correspond, for the purposes of the fifth and sixth paragraphs of section 40, to the measurement so prescribed for that month.