Enforcement Rules of the Household Registration Act Article 34
The forms, methods and dates of production of household statistics shall be stipulated by the central competent authority.
中文原文 戶籍法施行細則第34條
戶口統計表格式、編製方法及編報日期，由中央主管機關定之。
English translation for reference only; the Chinese text prevails. Not legal advice.