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Transport and Communications

Introductory note

Contents

Dear Users,

This publication “Transport and Communications”, you are holding in your hand contains information on the development of employment, key financial indicators, indicators on goods and passengers transported for a given quarter and the period from the start of year. The Section of transport and communications marks activities that are included in the following Divisions of CZ-NACE:
  • 60 - Land transport; transport via pipelines
  • 61 - Water transport
  • 62 - Air transport
  • 63 - Supporting and auxiliary transport activities; activities of travel agencies
  • 64 - Post and telecommunications.


The publication is presented in two languages - Czech and English - and is also available in electronic form. It comprises four parts.

Part A: Results of quarterly surveys on financial indicators

Data of this part of publication result from the processing of the Quarterly questionnaire P 3-04. For the selection of businesses included in the survey we used administrative sources that are included in the Business Register. Medium-sized businesses (usually with 20 – 99 employees) fill the questionnaire P 3-04(b) and large businesses (usually with 100 and more employees) the questionnaire P3-04(c). Individual “versions“ of the questionnaire P 3-04 differ in the number of indicators required. Basic indicators have the same methodological determination and are measured by both the questionnaires. In total, the quarterly questionnaire on transport and communications was sent to approximately a thousand units; response rate was 70,6 % for the first quarter of 2005. Data for the set of units that do not receive the quarterly questionnaire (small businesses, usually with less than 20 employees or without employees) are estimated using information from monthly surveys SP 1-12 and then specified according to the last results of annual surveys available.

In terms of methodology, data for individual periods of 2005 are comparable with those for 2004. In consequence of retroactive corrections made for preceding periods (erroneously reported data, inclusion of delayed questionnaires), and also due to estimates for the non-surveyed part of units taking into account the results of the latest available annual surveys, the data for preceding periods differ from the previously published data.

The publication contains basic indicators by individual Divisions (2-digit codes) of CZ-NACE and an overview of financial indicators for large enterprises (with 100 and more employees).

Financial indicators (where not otherwise mentioned) are at current prices in millions CZK.

Part B: Results of quarterly surveys on volume indicators

The sources of quarterly information in terms of volume indicators are surveys of the Ministry of Transport CR. The tables in this part of publication report on quarterly development of basic volume indicators for individual means of transport.

The tables are divided into two groups. The first group of tables (3., 3.1 and 3.2) informs on passenger transport, the second group (4., 4.1 - 4.9) on goods transport.

Part C: Results of monthly surveys on sales

Data in the second part of the publication are results obtained from the processing of Monthly questionnaire SP 1-12.

Until 2002 results of this survey were published monthly in the joint publication Results of Monthly Survey on Services (code of publication in the Catalogue of Publications 2002: 9002-02); since 2003, they comprise the part of the quarterly publication. Moreover they are also regularly presented in News Releases and Time series published by the CZSO on its web pages always on the 33rd working day after the reference quarter.


The monthly statistical questionnaire SP 1-12 monitors development of the Section measured by the sales index. Reporting units with 50 or more employees are covered all, and smaller enterprises are represented by samples whose size depends on the total number of units in a given size group in the 3-digit Group of CZ-NACE. Groups of enterprises with low numbers of employees that, according to the Business Register, are not numerous are covered all by the survey. In groups where random sampling is applied, so-called rotation takes place, i.e. partial substitution of the sample, aimed at updating the set of reporting units on the one hand, and keeping comparability with data produced in preceding years on the other. As a result, randomly chosen enterprises principally remain in the sample for two consecutive years and then they are substituted. In total, monthly questionnaire transport and communications was sent to about 2.8 thousand units, response rate in individual months differs – the number of received questionnaires for the currently processed month is lower. The average response rate was 57,4 % for the 1st quarter of 2005.
The questionnaire SP 1-12 measures sales, both including VAT and not including VAT; sales excluding VAT are used to calculate the sales index. It is supposed for monthly survey that the number of units is constant throughout the year: therefore, the results of the monthly survey may differ from the results produced by quarterly or annual surveys whose purpose is to estimate not only the index, but the absolute volume of sales, and that is why they also take into account the changing number of enterprises in individual periods. Different samples in some of the Divisions of CZ-NACE with large variance in sales are another cause of possible discrepancies.

Calculation of aggregate indices uses the weights of 2000. Sales measured by the monthly survey at the level of 3-digits of CZ-NACE in individual months of 2000 serve as the weights. Y-o-y sales indices at current prices are derived from the monthly survey for each deepest CZ-NACE level. For the same CZ-NACE levels, price statistics produce also y-o-y price deflators for individual months and price deflators of individual months related to the 2000 average.

Using the chaining of deflators, monthly sales at current prices for the deepest CZ-NACE levels are converted to the 2000 price level. The sum of sales at constant prices gives aggregate sales (for 2-digit CZ-NACE) at constant prices, which provide a basis for the calculation of y-o-y indices at constant prices. Aggregate deflator is a ratio of aggregate sales at current and constant prices. The sum of 2000 monthly sales at current prices amounts to the sum of sales at constant prices.

This publication contains y-o-y and basic indices (average of 2000 = 100) of sales at current and constant prices seasonally non-adjusted.

Published data for 2004 are final; data for current year are preliminary. Final data for 2005 will be published in June 2006.

Part D: Graphs

The graphs in Part D show share of Section transport, storage and communication in gross value added in the CR (Graph 1), share of two 2-digit CZ-NACE activities in total sales in Section of transport, storage and communication (Graph 2), inland freight transport outputs to GDP ratio in the CR (Graph 3), Graph 4 compares development of rail and road freight transport outputs in the CR, Graphs 5 and 7 compare year-on-year trend of sales with year-on-year sales indices adjusted for the number of working days, and Graphs 5 and 8 compare month-on-month index derived from the trend component of the time series with 3-month moving indices calculated form seasonally adjusted data