(a) As of December 31 of each year, the board of trustees shall make the following allocations that in the aggregate equal the net investment income or loss for the year:
(1) to the closed subdivision annuity reserve fund, interest as allowed under this subtitle on the mean amount in the closed subdivision annuity reserve fund during that year;
(2) to the optional group term life fund, interest as allowed under this subtitle on the mean amount in the optional group term life fund during that year;
(3) to the general reserves account of the endowment fund, a positive or negative amount determined by the board;
(4) to the employees saving fund, current interest as allowed under this subtitle on the member account balances on January 1 of that year of all persons who are members on December 31 of that year;
(5) to the accounts of subdivisions, other than subdivisions otherwise described by this section, positive or negative amounts as determined under rules adopted by the board prescribing the allocation methodology for the accounts; and
(6) to the accounts of subdivisions to which § 842.052 or 842.053 applies, positive or negative amounts as determined by the board, and if a subdivision terminates participation before December 31 of that year, the board shall determine the allocation amount and transfer date before December 31 of that year.
(b) The account of a subdivision that has ceased participation according to § 845.317(a) will not receive an allocation under this section.