Deficiencies or excesses occurring in the Old Age and Survivors’ Insurance Revolving Fund by reason of differences of a fraction of a cent in contributions or other amounts paid by a public agency under the provisions of this part shall be offset proportionately against the charges or assessments for administrative costs provided by Section 22551. Such offsets shall be applied annually by transfer between the said revolving fund and the appropriation available for the support of the board and upon request of the board the State Controller shall make such transfers.