58. For the purposes of this chapter, the pensionable salary for a year is the pensionable salary on 1 January of that year, computed on an annual basis. The municipality shall, at the request of the Commission, furnish to it any information relating to the pensionable salary.
For the purposes of the first paragraph, the pensionable salary includes any part paid as expense allowance.
The second paragraph applies for the purposes of computation of the maximum pension determined under section 32.