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The CPI is revised regularly to ensure the goods and services surveyed reflect the current spending habits of New Zealand consumers. Revisions are carried out every three years, the latest review being September 2002.
The CPI revisions look at new items which may need to be included, new weights and sometimes whether the CPI needs to be re-based. After the 1999 revision, for example, the CPI now includes avocados, capsicums, taro, Internet charges and cell phone charges. The June 1999 revision included a rebase to June 1999 (=1000). New items included in the September 2002 CPI revision, for example, were water charges and refuse charges.
The links below have more information on the CPI revisions.
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