Some references, they don't seem to cross reference very well...
https://mccrindle.com.au/insights/blog/ ... tribution/
http://quickstats.censusdata.abs.gov.au ... ckstat/036
https://theconversation.com/what-income ... alia-80069
https://www.acoss.org.au/wp-content/upl ... tsheet.pdf
https://www.smh.com.au/money/planning-a ... 4z8s4.html
this one's probably best and has a pretty cool little comparison/calculation facility.
http://mattcowgill.com/2018/03/23/how-d ... e-compare/