The appropriations limit imposed on any new or existing entity of government by this Article may be established or changed by the electors of such entity, subject to and in conformity with constitutional and statutory voting requirements. The duration of any such change shall be as determined by said electors, but shall in no event exceed four years from the most recent vote of said electors creating or continuing such change.

(Sec. 4 added Nov. 6, 1979, by Prop. 4. Initiative measure.)