Statistical scope
This market represents United States national. Its primary public series is ssa-us-national-births and measures US Social Security card applications associated with live births.
- Population basis: live_births
- Metric family: count
- Period type: calendar_year
- Release mode: full_snapshot
Derivations
Ranks, trends, and eligibility remain scoped to one statistical series. Sources contribute only through reviewed compatibility and overlap precedence.
Five- and ten-year changes require the exact comparison year; missing periods are not interpolated.