The CPI measures price changes relating to the spending pattern of metropolitan private households. This group is termed the CPI population group. 'Metropolitan' is defined as the State capital cities, together with Darwin and Canberra.
This population group differs from that applying to CPIs calculated and published prior to the September quarter 1998. For more information see the article Outcomes of the 13th Series Australian Consumer Price Index Review in Year Book Australia 1999.
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