Crynodeb o'r cais
Live births by age group of mother for local authorities outside the national parks, Wales, mid-year to mid-year period (1 July to 30 June) for 2015 to 2016 and 2016 to 2017. Death occurences by sex and age groups for local authorities outside the national parks, Wales, mid-year to mid-year period for 2015 to 2016 and 2016 to 2017.