2024-04-102024-04-102012https://otos.stat.fi/handle/123456789/32645enCC BY 4.0birth ratechildrenfertilityincrease of populationnatalitypopulationpopulation changesvital statisticsBirths 2011Syntyneet 2011Födda 2011URN:NBN:fi-fe20230919132015fulltext