Every city and town may, when authorized by the voters of the city or town pursuant to Article VIII, section 6 of the state Constitution at an election held pursuant to RCW
39.36.050, contract indebtedness or borrow money for strictly municipal purposes on the credit of the city or town and issue negotiable bonds therefor in an amount which when added to its existing indebtedness will exceed the amount of indebtedness authorized by chapter
39.36 RCW, as now or hereafter amended, to be incurred without the assent of the voters but will not exceed the amounts of indebtedness authorized by chapter
39.36 RCW, as now or hereafter amended, to be incurred with the assent of the voters.