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The Household Expenditure Survey (HES) is the major source of data used to derive weights for the Consumer Price Index (CPI). In deriving these weights the detailed commodity items identified in the HES must be mapped to the CPI expenditure classes. This spreadsheet provides the correspondence between the expenditure classes of the 16th series CPI (introduced in respect of the September quarter 2011) and the Household Expenditure Classification (HEC) at the 10 digit level used for the 2009-10 HES.
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