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7598755551CBRcrude birth rate, the total number of live births in a year for every 1000 people in a society0
7598755552CDRcrude death rate, the total number of deaths in a year for every 1000 people in a society1
7598755553NIRnatural increase rate, the percentage of how much a population grows CDR-CBR2
7598755554TFRtotal fertility rate, the average number of children a woman will have in her childbearing years 15-493
7598761548Doubling TimeNumber of years needed to double a population, assuming a constant rate of natural increase4
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