Information last updated:
07.03.2011.
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Definitions
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Volume index of industrial production |
The volume index of industrial
production describes changes in the volume of industrial production output in
the reference period compared with the base period. |
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Unadjusted
data |
Data
which are calculated taking into account the volume of actually produced
output of each month. |
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Seasonally adjusted data |
Data
which allows assessing changes in economic processes in time series analysis
more objectively, eliminating influence of seasonality and calendar on the
volumes of industrial production. Applying this method, for example,
influence of Easter, Christmas and other holidays is excluded, as well as
production volume fluctuations of sectors depending on the season (mining and
quarrying, production of preserved fruits and vegetables, production of heat
in heating season, etc.). It
must be taken into account that according to methods of seasonal adjustment
and calendar adjustment data of previous period is recalculated if data of new period
is added. |
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Calendar adjustment data |
Data
which excludes influence of the number of working days, leap year and rolling
weekend in comparable periods. |
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Methodology
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Source of data |
Monthly survey “1-r “Survey of
industrial activity”” and ”12-r
"Survey on industrial activity and volume of new orders in industry””. |
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Coverage |
Data
were collected from economically active enterprises where 20 and more persons
were employed in industrial production or industrial turnover in previous
year comprised 300 thsd lats and more. The
calculation of volume index of industrial production includes the following
sections: B – mining and quarrying, C – manufacturing, D - Electricity, gas, steam, and air conditioning
supply (excluding group 35.3 - "Steam and air conditioning
supply"). |
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Unit surveyed
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Unit of kind of activity – kind of economic activity of
enterprise on which information is compiled. |
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Sample size
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The number
of enterprises surveyed monthly in 2011 – 1293. In 2009 the rate of
enterprises in the volume of industrial production exceeded 80%. |
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Description of data |
Each month starting from the
15th date the information on industrial production output during
the reference period at current prices is collected within ten days according
to classes of Statistical Classification of
Economic Activities, Rev. 2 (NACE Rev. 2). |
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Methods of calculation |
Starting with January 2011
calculation of industrial production index (further in the text - IPI) is
taken up by chain index method where average monthly volume of production
manufactured (at constant prices) of previous year is used as a calculation
basis and value added of enterprises manufactured two years ago by NACE
sections, chapters, groups and classes is used as weights. IPI is calculated
by recalculating production output indicator at constant prices with the help
of producer price indices. Weights are changed every year, thus changes of
industry structure are taken into account. Industrial production volume index
is recalculated from 2008 when value added indicator accordingly NACE Rev. 2
classification is available. |
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Classification |
Statistical Classification of
Economic Activities in the European Community, Rev. 2 (NACE Rev. 2) |
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Data adjustment |
Data
adjustment is carried out if the respondent specifies data on some of the
previous periods. Publishing data of last month of the quarter data of
previous two months are updated. |
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Specific notes |
In some cases, due to specifics
of electronic data processing technologies and rounding adjustments, slight
discrepancies may occur between totals and sums of components. |
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Periodicity and release calendar
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Monthly data |
Data are published on the 34th day after the
end of the reference period according to chapters of NACE Rev. 2, but data of
manufacture of food products (NACE 10), manufacture of wood and articles of wood
(NACE 16) – according to groups of NACE Rev.2. |
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Quarterly data |
Data for the 1st
quarter are published in the database in May, for the 2nd quarter
in August, for the 3rd quarter in November and for the 4th
quarter in February next year. |
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Annual data |
Annual data are published
together with December or IV quarter data. |
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Dissemination
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On the Internet |
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Annual data |
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Quarterly data |
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Monthly data |
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Press releases |
A press release on the volume
indices of industrial production output is published monthly. |
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Publications |
An
informative description “On
industrial production volume” is
published quarterly. You can purchase publications
in the Information Centre or
subscribe and receive them by mail and/or e-mail after registration on the
Web Page of the CSB. To see the Catalogue of Statistical Publications and
prices, as well as to purchase the publications see section Subscribe to publications. Here
you may download informative leaflets in English published by the CSB of
Latvia free
of charge. |
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Tailor made data sets |
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If you cannot find the
necessary information on the Internet or in the publications, the CSB will
prepare tailor made data set according to your request using the databases at
its disposal. More
information on how to prepare a request for tailor made information. |
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Contact person on methodology
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Industry |
Ramona Skakunova, Head of the
Industrial Statistics Section, tel. (+371) 67366953, ramona.skakunova@csb.gov.lv |
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Links to this theme
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Eurostat
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The Statistical Office of the
European Communities (Eurostat) on its homepage publishes information on
industry in EU-27 and in each individual country: Statistics/
Industry, trade and services/ Short-term business statistics/ Database/
Industry. |
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International Monetary Fund |
The International Monetary
Fund (IMF) on its home page publishes a methodological description of
industry and data on volume indices of industrial production: |
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