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・ Rate function
・ Rate gyro
・ Rate integrating gyroscope
・ Rate limiting
・ Rate Mahatmaya
・ Rate making
・ Rate of change
・ Rate of climb
・ Rate of convergence
・ Rate of evolution
・ Rate of exploitation
・ Rate of fire
・ Rate of flow
・ Rate of heat flow
・ Rate of infusion
Rate of natural increase
・ Rate of penetration
・ Rate of profit
・ Rate of reinforcement
・ Rate of response
・ Rate of return
・ Rate of return on a portfolio
・ Rate of return pricing
・ Rate of solution
・ Rate of turn
・ Rate of turn indicator
・ Rate of unemployment
・ Rate pressure product
・ RATE project
・ Rate ratio


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Rate of natural increase : ウィキペディア英語版
Rate of natural increase

In demographics, the rate of natural increase (RNI) is the crude birth rate minus the crude death rate of a population. When looking at countries, it gives an idea of what position in the Demographic Transition Model, but to find out how much a country is growing, the population growth rate should be observed.
Usually developing countries have a positive or high natural increase rate. Developed countries have a negative/neutral or low natural increase rate,〔(Human Population Growth – Kimball's Biology Pages )〕 but many developed countries have their population increasing due to immigration despite their negative RNI.
The formula for the rate of natural increase is:
: (Crude birth rate − Crude death rate) / 10, where birth and death rates are in per thousand.
The result is the rate of natural increase in percentage form.
For example, Madagascar's crude birth rate (37.89) minus the crude death rate (7.97) is 29.92; divide that by 10 and the result is 2.992%, Madagascar's rate of natural increase.
==See also==

* List of countries by natural increase

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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