For the Australian cities I only have the housing completion figures for Sydney, which over the FY 2018-19 completed 42,414 units, of which 29,815 are multi unit:
https://www.planning.nsw.gov.au/Rese...ousing-Monitor
The closest thing I can find for Melbourne are their housing approvals. In the year to October 2019, Melbourne approved 43,595 housing units, of which 19,952 are everything other than a house (townhouses, terraces, apartments):
http://stat.data.abs.gov.au/Index.as...Code=BA_GCCSA#