2024-04-102024-04-102016https://otos.stat.fi/handle/123456789/32649enCC BY 4.0birth ratechildrenfertilityincrease of populationnatalitypopulationpopulation changesvital statisticsBirths 2015Syntyneet 2015Födda 2015URN:NBN:fi-fe20230919132020fulltext