Number of exits to a Brussels municipality

Total migration is the difference between the population of 1 January and 31 December less the natural balance (birth minus deaths) compared to the average total population of the year (sum, divided by 2, of the population on 1 January and from that on 31 December of the year). Moreover, it is interesting to distinguish between internal balance (movements within Belgium) and external balance (movements from or abroad). Note: the statistical adjustment is taken into account in the calculation of the overall indicator.总迁移人口（Total migration）指1月1日与12月31日的人口差值，减去自然增减差额（出生人数减死亡人数）后，与该年度平均总人口（即当年1月1日与12月31日人口之和除以2）的比值。此外，需区分内部平衡（比利时境内的人口流动）与外部平衡（来自境外或流向境外的人口流动），这一区分具有研究价值。注：统计调整已纳入该综合指标的计算过程。