If you can survive to menopause.
The average of 24+ years old appears way too high, as it was common in the old extant cultures to bear from age 14 or even less.
In the past the age of female fertility was higher than today, mostly due to nutrition. Age of 14 was more of an exception than a rule, it used to be 16 or more. Also even 24 is a right average for 14 and 34, most women even today can have children at 34.