(a) The amount of the state ceiling shall be determined by the department in accordance with the Federal Code. The amount of the state ceiling available at any time shall be the amount, determined by the department, which results from subtracting from the state ceiling:

(1) The amount of bonds issued pursuant to notices of allocation and with respect to which confirmation of issuance has been received by the department on or before the applicable expiration date; and

(2) The amount of bonds covered by notices of allocation outstanding but with respect to which the expiration date has not occurred and with respect to which no confirmation of issuance has been filed with the department.

(b) The department shall keep separate records for the economic development share, housing share, and flexible share and shall make available to the public, by telephone recording or periodic news release or such other means as the department may determine to be appropriate, information with respect to the available amount of the economic development share, housing share, and flexible share.