This dataset includes number of births to unmarried women by age group in the United States since 1940. Methods for collecting information on marital status changed over the reporting period and hav
CDC Chronic Disease Data and Surveillance2025-04-21 更新10
This dataset includes percent distribution of births to unmarried women by age group in the United States since 1970. Methods for collecting information on marital status changed over the reporting p
CDC Chronic Disease Data and Surveillance2025-04-21 更新10
