There is actually also a study on fertility effects on this reform: www.jstor.org/stable/43965...
"Our precise and robust estimates on birth register data reveal that increases in public child care have significant positive effects on fertility."
jstor.org
CHILDREN OF A (POLICY) REVOLUTION: THE INTRODUCTION OF UNIVERSAL CHILD CARE AND ITS EFFECT ON FERTILITY on JSTOR
Stefan Bauernschuster, Timo Hener, Helmut Rainer, CHILDREN OF A (POLICY) REVOLUTION: THE INTRODUCTION OF UNIVERSAL CHILD CARE AND ITS EFFECT ON FERTILITY, Journal of the European Economic Association,...