How do we calculate “birth rate”, “death rate”, “rate of natural increase” and “divorce rate”?

Birth rate: Number of live-births per 1,000 persons at mid-year.
Mortality rate: Number of deaths per 1,000 persons at mid-year.
Natural increase: Number of live-births minus number of deaths for the year.
Rate of natural increase: Natural increase per 1,000 persons at mid-year.
Divorce rate: Number of divorce cases per 1,000 persons at mid-year.

Geometric Mean

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