The Retirement Board shall keep in convenient form such data as shall be necessary for the actuarial valuation of the Retirement System. As of June 30, 1933, and thereafter at intervals of not to exceed six years, the Board shall make an actuarial investigation into the mortality, service and compensation experience of the members and beneficiaries; and further shall make an actuarial valuation of the assets and liabilities of the Retirement System. From time to time, the Board shall determine the rate of interest being earned on the retirement fund. Upon the basis of all or any such investigation, valuation and determination, the Board shall:
(a) Adopt for the retirement system such interest rate and such mortality, service and other tables, or any of such items, as shall be deemed necessary.
(Added by Ord. 299-64, App. 11/9/64; amended by Ord. 326-00, File No. 001921, App. 12/28/2000)