Before the question of recall of such officer shall be submitted to the qualified voters of the City, a petition demanding such question to be so submitted shall first be filed with the City Secretary; which petition shall be signed by qualified voters of the City equal in number to at least 20% of the number of votes cast at the last regular municipal election of the City, but in no event less than 150 such petitioners. Each signer of such recall petition shall personally sign his or her name thereto in ink or indelible pencil, and shall write after his or her name his or her place of residence, giving name of street and number, and shall also write thereon the day, the month and year his or her signature was affixed.