 
<prompt> Adadin watanni a tsakanin aure da haihuwar farko ga dukkan mata 'yan shekaru 15-49 ga shekarun bincike na 1990, 1997, 2002, 2007, 2009, and 2012, tare da kashi 95% na tabbacin tazara | (1990.0, 20.3) (1997.0, 21.5) (2002.0, 23.3) (2007.0, 28.3) (2009.0, 20.6) (2012.0, 22.3) <response> Kamar yadda aka nuna a hoto, in ban da tashin da ya yi sosai a 2007 zuwa ga watanni 28.3, wannan lamba ba ta sauya ba, daga watanni 20,3 zuwa 23.3.  