Beginning on the effective date of this amendatory Act of 1997, the amount of a child's annuity shall be $220 per month for each child while the spouse of the deceased employee parent survives, and $250 per month for each child when no such spouse survives, and shall be subject to the following limitations:
A child's annuity shall be paid to the parent who is providing for the child, unless another person has been appointed the child's legal guardian.
The increase in child's annuity provided by this amendatory Act of 1997 shall apply to all child's annuities being paid on or after the effective date of this amendatory Act of 1997. The limitations on the combined annuities for a family in parts (1) and (2) of this Section do not apply to families of employees who died before the effective date of this amendatory Act of 1997.
40 ILCS 5/11-154