Mobility index: the annual ratio of the combined number of staff who have moved within and between functions, departments, occupations, duty stations and United Nations organizations compared to the total number of staff in the same department at the beginning of the year.
流动性指数：在各个职能、部门、职业、工作地点和联合国各组织内部和之间调动的工作人员总数与年初同一部门工作人员总数的年度比率。