 
<prompt> Kammalallun alƙaluman haihiwa ga dukkan mata 'yan shekaru 40-49 ga shekarun bincike na 1990, 1997, 2002, 2007, 2009, and 2012, tare da kashi 95% na tabbacin tazara | (1990.0, 8.1) (1997.0, 6.8) (2002.0, 5.9) (2007.0, 5.3) (2009.0, 4.9) (2012.0, 4.6) <response> Hoto na 9 ya nuna raguwa ta sosai a shekaru da dama daga haihuwa 8.1 ga duk mace ɗaya a 1990 zuwa haihuwa 4.6 ga duk mace ɗaya a 2012.  