In all cases where the board of county commissioners of any county having a population of 1,000,000 or more inhabitants at legally convened meetings held within the first quarter of the fiscal years 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, and 1991 has adopted annual appropriation bills for such fiscal years and thereafter such appropriation bills were published in a newspaper as provided by law, and subsequently at legally convened meetings held in such fiscal years within the time required by law, said board of county commissioners adopted tax levy ordinances based on such appropriation bills for county corporate, highway, civic center rental, public assistance, law library, rabies control, motor fuel tax, employees’ annuity and benefit fund and hospital purposes, and certified copies of such tax levy ordinances thereafter were duly filed with the county clerk of said county, then such appropriation bills and tax levy ordinances, and the taxes assessed, levied, and extended thereon, are hereby validated, notwithstanding that the several amounts and purposes for which such appropriations were made and taxes levied for such county corporate, highway, civic center rental, public assistance, law library, rabies control, motor fuel tax, employees’ annuity and benefit fund and hospital purposes, were not specifically itemized in detail as required by statute, and notwithstanding that in said appropriation bills or tax levy ordinances stated amounts of money are appropriated and levied for named public purposes using general language that renders the amounts for such purposes uncertain and illegal or the purposes for which the amounts are appropriated and levied uncertain and illegal.
     Provided, however, that nothing herein contained shall be construed as validating any tax levy in excess of the statutory rate of taxation authorized for such fiscal years or for any purposes not permitted by the constitution.