While the average vacancy rate for the biennium can be known only at the end of the biennium, the 2004 realized level of vacancies experienced is 5.5 per cent for staff in the Professional and higher categories.
虽然两年期的平均出缺率要到两年期终了才能知晓，但2004年专业及专业以上职类工作人员的实际出缺率为5.5％。