- Type of operation: statistics compiled from administrative registers, with results aggregated in tables.
- Population scope: persons who habitually reside in Spain and have acquired Spanish nationality during the reference year of the data, having previously held the nationality of another country or the status of stateless person.
- Geographical scope: national, Autonomous Communities and Cities and provinces.
- Reference period of the results: calendar year.
- Frequency of dissemination: annual.
Methodological documents, questionnaires, classifications, ...