The aggregate amount of taxes that may be levied by the Council without a vote of the people on property assessed and listed for taxation according to value for current operating expenses of the Municipality and for the necessary levies for relief and pension funds of the Municipality shall not exceed in any one year three and one-quarter mills for each one dollar of assessed valuation. The Council shall levy annually outside of the three and one-quarter mill limitation herein above provided, but subject to the ten- mill limitation imposed by the Constitution and laws of the State of Ohio, such taxes as may be necessary to pay the interest on and the principal of all notes and bonds of the Municipality heretofore or hereafter issued. The limitation of this Charter upon the power of Council to levy taxes shall not operate as a limitation upon the power of Council to levy taxes upon such other subjects and for such other purposes as may be lawful under the Constitution and laws of the State of Ohio, nor shall the authority of Council to submit additional levies to a vote of the people under the authority of the Constitution or laws of the State of Ohio be deemed impaired or abridged by reason of any provision of this Charter.