The Time Series Profile presents data from three Censuses, based on the geographical boundaries for the most recent of the three, allowing meaningful comparisons to be made. Comparing data from different Time Series Profiles is not valid, because geographical boundaries are subject to change between Censuses.
The 2016 Time Series Profile compares data from the 2006, 2011 and 2016 Censuses where the data classifications are comparable. If a data classification has been revised between Censuses, data will be output on the classification that has been used in the 2016 Census. Footnotes explain the correspondence between the data classifications of previous Censuses and the 2016 classification.
The data is based on place of usual residence (that is, where people usually live, rather than where they were counted on Census Night).