page_title: Total fertility rate
section_title: Net reproduction rate
hierarchical_section_title: Total fertility rate / Related parameters / Net reproduction rate
caption_attribution_description: English: This is a bar chart showing the Total Fertility Rates for select countries (some low, some high) in 2010. The source is the UN World Population Prospects: 2008 Revision.
context_page_description: The total fertility rate, sometimes also called the fertility rate, absolute/potential natality, period total fertility rate, or total period fertility rate of a population is the average number of children that would be born to a woman over her lifetime if:
  She was to experience the exact current age-specific fertility rates through her lifetime, and
  She was to survive from childbirth till the end of her reproductive life.
  It is obtained by summing the single-year age-specific rates at a given time. As of 2019, the total fertility rate varied from 0.92 in South Korea to 7.03 in Niger.
context_section_description: An alternative fertility measure is the net reproduction rate (NRR), which measures the number of daughters a woman would have in her lifetime if she were subject to prevailing age-specific fertility and mortality rates in the given year. When the NRR is exactly 1, then each generation of women is exactly reproducing itself. 
  The NRR is less widely used than the TFR, and the United Nations stopped reporting NRR data for member nations after 1998. But the NRR is particularly relevant where the number of male babies born is very high due to gender imbalance and sex selection. This is a significant factor in world population, due to the high level of gender imbalance in the very populous nations of China and India. The gross reproduction rate (GRR), is the same as the NRR, except that—like the TFR—it ignores life expectancy.
caption: Total fertility rate for selected countries [needs update]
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