9.1. The first indexing 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 teacher 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 the teacher’s death, in relation to the total number of days in that year.