In addition to the tax on property as otherwise provided for and under the power and authority conferred in the laws of the state, there shall be levied and collected annually, or more often where provided for, a privilege license tax on trades, professions, agencies, business operations, exhibitions, circuses and all subjects authorized to be licensed as set out in this chapter. Nothing herein contained shall be construed to prevent the Board from imposing from time to time, as it may see fit, license taxes that are not specifically herein defined, or from increasing or decreasing the amount of any special license tax, or from prohibiting or regulating the businesses or acts licensed, and all licenses are granted subject to the provisions of existing or future ordinances.
(`94 Code, § 10-2)