REPORT OF INVESTMENT RETURNS AND ASSUMPTIONS.

(a) A public retirement system shall, before the 211th day after the last day of its fiscal year, submit to the board an investment returns and actuarial assumptions report that includes:

(1) gross investment returns and net investment returns for each of the most recent 10 fiscal years;

(2) the rolling gross and rolling net investment returns for the most recent 1-year, 3-year, and 10-year periods;

(3) the rolling gross and rolling net investment return for the most recent 30-year period or the gross and net investment return since inception of the system, whichever period is shorter;

(4) the assumed rate of return used in the most recent actuarial valuation; and

(5) the assumed rate of return used in each of the most recent 10 actuarial valuations.

(b) For purposes of this section, "net investment return" means the gross investment return minus investment expenses. The net investment return may be calculated as the money-weighted rate of return as required by generally accepted accounting principles. The period basis for each report of investment returns under this section must be the fiscal year of the public retirement system submitting the report.

(c) If any information required to be reported by a public retirement system under Subsection (a) is unavailable, the governing body of the public retirement system shall, before the 211th day after the last day of the public retirement system's fiscal year, submit to the board a letter certifying that the information is unavailable, providing a reason for the unavailability of the information, and agreeing to timely submit the information to the board if it becomes available.