The governing body or board having control of the finances of every such jointly contracting municipality, shall raise by taxes in each year, as other moneys are raised in such municipality, such sum of money as may be necessary to pay the interest on the notes and other obligations of the municipality issued as aforesaid, including, when necessary, interest on such of its obligations as may be payable out of the proceeds of assessments, and also the principal of such bonds, except obligations payable out of assessments and temporary obligations issued as aforesaid, as may mature during the then ensuing fiscal year.