  
<prompt> Kason haife-haifen da ba na farko ba a cikin shekaru biyar da suka gabaci da suke ƙasa da watanni 24 bayan haihuwar da ta gabata
 Kason haife-haifen da ba na farko ba a cikin shekaru biyar da suka gabaci da suke ƙasa da watanni 24 bayan haihuwar da ta gabata 
 [[1990, 49.8], [1997, 44.3], [2002, 33.5], [2007, 32.8], [2009, 33.2], [2012, 32]] 
 <response> Duk da cewa, akwai raguwa ta sosai a tsakanin tazarar haihuwa a tsakanin 1990 da 2002, wannan kaso ya daɗe bai sauya ba a shekarun da suka biyo kamar yadda aka nuna a Jadawali na 4. Daga 2002 zuwa 2012 kusan ɗaya bisa uku na haife-haife sun auku ne a ƙasa da watanni 24 bayan haihuwar da ta gabata.  