A. Until July 1 in any calendar year, forty percent of the state ceiling for the calendar year shall be allocated to state agencies as a group; provided, however, that such allocation shall be made in accordance with directives, rules or regulations governing the distribution of allocations to be established by the board.

B. Until July 1 in any calendar year, sixty percent of the state ceiling for the calendar year shall be allocated to issuing authorities that are not state agencies, as a group; provided, however, that such allocations shall be made in accordance with directives, rules or regulations governing the distribution of allocations to be established by the board.

C. On July 1 of each calendar year, the amount of any allocation issued by the board pursuant to Subsection A or B of Section 3 [this section] of the Private Activity Bond Act shall expire and shall be automatically set aside into the state private activity bond fund, except to the extent that an allocation has been used by an issuing authority prior to July 1 to issue private activity bonds or to make a mortgage credit certificate election.

D. From July 1 through December 31 in any calendar year the board shall prescribe the allocation of the state ceiling.