The contributions required of the city under the agreement equal to the maximum amount imposed, or which may hereafter be imposed, by section 1410 of the Federal Revenue Code on employers of persons engaged in employment as defined in section 1426 of such code, for the period beginning December 16, 1953, and ending June 39, 1954, together with the city's pro rata share of the cost of administering the provisions of chapter 126, Arizona Laws of 1951, shall be paid from funds budgeted and authorized to be contributed during the fiscal year ending June 30, 1954, as the city's contribution to the Tucson City Employees' Retirement Fund, being chapter 20 of the Code of the City of Tucson, 1953, abolished by Ordinance No. 1420. Beginning with the fiscal year 1954-55, and each year thereafter, the city manager shall cause an amount sufficient to pay such employer contributions to be included in the annual budget request made to the mayor and council. For the purpose of providing funds to meet such employer contributions and administrative expenses, the city council shall annually levy, in addition to all other taxes levied by the city, a tax clearly sufficient to provide the total amount of all such items in the budget, however, the council may appropriate from any other available funds all or part of the total of such amounts in the budget, in which event the tax levy to be made for such purposes shall be clearly sufficient to provide the difference between the amounts so appropriated and the total amount of all such items in the budget.
(1953 Code, ch. 20, ยง 33)