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Dewis pwnc arall neu clirio pob hidlydd.
The changing composition of families over time, comparing the fertility of women of the same age and the number of children they have had.
Annual statistics on conceptions to residents of England and Wales, with numbers and rates by age group including women aged under 18 years.
Annual statistics on conceptions to residents of England and Wales; numbers and rates, by age group including women aged under 18 years.
