Birth rate - The number of live births per 1000 of the population, Death rate  - The number of deaths per year per 1000 population., Natural increase - When there is higher birth rates than death rates , Fertility rate - The number of live births per 1,000 women of child-bearing age, Life expectancy - The average age to which a person can be expected to live,

Population

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切換範本

恢復自動保存: ?