Producer price indices volume 2002, Supplement 2


Consumer expenditure survey


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Consumer
expenditure survey
National Accounts
Frequency of
update
(years)
Canada
1996
4
Mexico
1989
2 (in the future)
United States
1993-95 average
2 (from 2002)
Australia
1998-99
5
Japan
2000
5
Korea
2000
5
New Zealand
1997-98
Some annual
revision
Austria
2000
5
Belgium
1995-96
When rebasing
Czech Republic
1999
5
Denmark
1996
Combined with CES
4-5
Finland
2000
5
France
Revised annually
Annually
Germany
1995
5
Greece
1998-99
5
Hungary
Revised annually
Annually
Iceland
Revised annually
Annually
Ireland
1999-00
5
Italy
Revised annually
Annually
Luxembourg
1993
..
Netherlands
1995
5
Norway
Revised annually
Annually
Poland
Revised annually
Annually
Portugal
1994-95
5
Slovak Republic
2000
Combined with CES
5
Spain
2000-01
5 (from 2002)
Sweden
Revised annually
Combined with CES
Annually
Switzerland
1998
Annually (from
2002)
Turkey
1994
5
United Kingdom
Revised annually
Annually
..: metadata are not available
2.10.2 Frequency of revising/updating weights
The consumption habits of a given group of households, which the basket is supposed to
represent, change with time. Such changes may be in response to different relative price movements,
32
Obviously, the boundaries between intermediate consumption and HFCE are clouded in HBS data. The purchase of raw materials for the
production of goods and services that will ultimately be consumed or bartered by the producing household are in fact recorded as HFCE.


39
Price Indices
© 2002
changes in supply, changes in technology, new products being introduced, changes in tastes and
fashions and changes in standards of living.
These changes bring with them a gradual shift in consumer preferences. Furthermore, consumers
must continuously adjust their spending habits for changing market conditions. All of these factors
necessarily have an impact on household consumption expenditures. In practice, the sample of goods
and services is chosen to reflect the spending patterns of the reference population at a given time, the
weight base of the index. These often refer to specific socio-economic groups in the country. The
items chosen are clearly defined and remain unchanged throughout the life of the index. When the
weighting pattern is revised, the sample of goods and services and outlets are revised as well so as to
reflect new spending patterns.
The ILO guidelines state that weights should be examined periodically to determine whether they
still adequately reflect current expenditure patterns. Where changes have occurred, the weights should
be revised. The guidelines state that weights should in any case be revised every ten years. The ILO
guidelines also state that whenever the composition and/or weighting pattern of the index is changed
the new index should be linked to the old index to provide a continuous time series.
There is considerable variation in the frequency with which weights are updated. In several
OECD Member countries this is done each year, while in others updating is much less frequent. Table
6 also shows the frequency of weight revision in OECD Member countries.

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