See also: List of years in literature
(Please add to this list. If you have read any of the books above, why not write an article for Wikipedia?)
... 18, 5.0% from 18 to 24, 29.0% from 25 to 44, 24.2% from 45 to 64, and 12.7% who are 65 years of age or older. The median age is 39 years. For every 100 females there are ...