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 period and have been documented in:
SOURCES
REFERENCES
1. Curtin SC, Ventura SJ, Martinez GM. Recent declines in nonmarital childbearing in the United States. NCHS data brief, no 162. Hyattsville, MD: National Center for Health Statistics. 2014. Available from:
http://www.cdc.gov/nchs/data/databriefs/db162.pdf.