See http://www.parliament.sa.gov.au/pp/html/pastprem.shtm until someone copies the dates from there
... family size is 2.79. In the town the population is spread out with 18.5% under the age of 18, 4.4% from 18 to 24, 20.6% from 25 to 44, 26.3% from 45 to 64, and 30.2% who ...