Australia's population is set is expected to pass 23 million on Tuesday evening (AEST).
According to the Australian Bureau of Statistics, the population passed five million in 1919, 10 million in 1960, 15 million in 1983 and 20 million in the December quarter of 2003.
AAP reports the latest million people were added between September 2009 - April 2013 at an annual growth rate of 1.25%.
