Birth rate

number of births per year per thousand people (in a given area, group, etc.)

In demography, natality, or rather the crude birth rate (CBR) of a population is the number of childbirths per 1,000 people per year. It can be mathematically represented by where n is the number of childbirths in that year, and p is the current population. This figure is combined with the crude death rate to produce the rate of natural population growth (natural in that it does not take into account net migration).
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Noun
1. the ratio of live births in an area to the population of that area; expressed per 1000 population per year
(synonym) birthrate, fertility, fertility rate, natality
(hypernym) rate

The birth rate is usually given as the number of live births divided by the average population (or the population at midyear). This is termed the crude birth rate. In 1995, for example, the crude birth rate per 1,000 population was 14 in the United States, 16.9 in Australia, etc.

n.
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