However, beginning January 1, 1996, the increases payable under this subsection (a) to a fireman born before January 1, 1945 shall be at the rate of 3% of the originally granted annuity amount, notwithstanding that the fireman terminated service prior to the effective date of this amendatory Act of 1995.
If the money in the Supplementary Payment Reserve in any year arising from interest income above 4% a year as defined in this Section accruing in the preceding year; and the contributions by retired persons, are insufficient to make the total payments to all persons entitled to the annuity under this Section; and any investment earnings over 4% a year beginning with the year 1969 not previously used to finance such increases and transferred to the Prior Service Annuity Reserve, may be used to the extent necessary and available to provide sufficient funds to finance such increases for the current year. Such sums shall be transferred from the Prior Service Annuity Reserve. If the total money available in the Supplementary Payment Reserve from such sources are insufficient to make the total payments to all persons entitled to such increases for the year, a proportionate amount computed as the ratio of the money available to the total of all the payments specified for that year shall be paid to each person for that year.
No part of any such increase under this Section is an obligation of the fund otherwise established under this Article 6.
40 ILCS 5/6-164.1