The question of establishing a municipal arts council shall be submitted to the electors upon resolution of the governing body or upon the petition of not less than twenty-five percent of that number of electors of the city who voted at the last general election, filed with the governing body not less than sixty days before the next regular election. The municipal arts council may be discontinued within any city by any of the methods by which it may be established, except that once established, such council shall not be discontinued until after it has been in operation for at least five years from the date of establishment.