Rate of natural increase
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In demographics, the rate of natural increase (RNI) is the crude birth rate minus the crude death rate of a population (excluding migration). 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.
Natural Increase: Natural increase is the birth rate minus the death rate. If it is a positive number that means the population is increasing but if it is a negative number that means the population decreasing. Example if it is positive that means more people are being born than dying but if it is a decrease that means more people are dying than being born.