1. Population data for the recent intercensal period (September quarter 2001 to June quarter 2006) have been updated using information from the 2006 Census of Population and Housing (2006 Census). The majority of estimated resident population (ERP) data for September quarter 2001 onwards in this publication are now based on the 2006 Census. Tables containing data that remains based on the 2001 Census are footnoted.
2. Net overseas migration (NOM) estimates contain a break in time series. Estimates for September quarter 2006 onwards use an improved methodology and are not comparable with NOM estimates from earlier periods – see paragraph 1 of the Technical Note.
3. Births and deaths data for the December quarter 2006 have been adjusted to include updated registrations over the three previous 2006 quarters (March, June and September). Therefore, any data used for analysis from births, deaths, natural increase or total growth for the December quarter 2006 should be used with caution. For further detail see paragraphs 11–17 of the Explanatory Notes.