  
<prompt> Birth intervals
 Percent distribution of non-first births by number of months since the preceding birth 
 [["2021-07-17 00:00:00", 0.08], ["18-23", 0.17], ["24-35", 0.38], ["36-47", 0.2], ["48-59", 0.08], ["60+", 0.09]] 
 <response> Almost 4 in 10 births (38%) occur 24-35 months after the previous birth.  