The ratio of live births in an area to the population of that area; expressed per 1000 population per year WordNet 3.0 & Open English WordNet

Birth rate, also known as natality, is the total number of live human births per 1,000 population for a given period divided by the length of the period in years. Wikipedia

The Total Fertility Rate of a population is the average number of children that are born to a woman over her lifetime if: they were to experience the exact current age-specific fertility rates through their lifetime and they were to live from birth until the end of their reproductive life. Wikipedia

Total number of live births per 1,000 population divided by the length of a given period in years Wikidata

This article describes an internationally used statistical measure that is used to define reproduction rates Wikidata

The ratio of total live births to total population for a specific community or nation in a specified period; often expressed in births per thousand per year. Wiktionary

Rate of live births to population. Wiktionary (translation)

The average number of births per woman within a population. Wiktionary

The average number of children that would be born to a woman over her lifetime if she followed the current average pattern of fertility among a given group of women and survived through her reproductive years; used as an indicator of strength of population growth. Wiktionary

Indicator of population growth. Wiktionary (translation)

The ratio of live births in an area to the population of that area; expressed per 1000 population per year. Wiktionary

Ratio of live births to population. Wiktionary (translation)