The Mayor's office shall be located within the City's principal governmental building. The Mayor's salary shall be established by ordinance or resolution and may be changed by ordinance or resolution; however, no such change shall affect the Mayor's salary during his or her current term of office. Any change in the Mayor's salary shall be effective commencing with the term of office of the Mayor elected at the next general municipal election occurring not less than twelve (12) months after the enactment of such change.