In Britain, Ireland, and Australia, the word "milliard" has been largely replaced by either "thousand million" or the American usage of "billion".
See also: number names
... 18 to 24, 32.6% from 25 to 44, 23.2% from 45 to 64, and 12.2% who are 65 years of age or older. The median age is 37 years. For every 100 females there are 93.5 males. ...