8.1. The first adjustment of a pension and of other benefits resulting from indexing is made proportionately(1) to the number of days for which the pension was or would have been paid during the year in which the officer or employee retired, in relation to the total number of days in that year;
(2) as the case may be, to the number of days for which the pension was or would have been paid during the year of death of the public officer or employee in relation to the total number of days in that year.