Category: Economic statistics
Area: Prices
Survey / data collection: Producer price index of industrial products

MONSTAT metadata
Reference metadata
  1. Contact
  2. Metadata update
  3. Statistical presentation
  4. Unit of measure
  5. Reference period
  6. Institutional mandate
  7. Confidentiality
  8. Release policy
  9. Frequency of dissemination
10. Accessibility and clarity
11. Quality management
12. Relevance
13. Accuracy and reliability
14. Timeliness and punctuality
15. Coherence and Comparability
17. Data revision
18. Statistical processing
19. Comment

Note: For any question on metadata, please contact MONSTAT metadata support.

                                                                                     1. Contact                                                                           Vrh
1.1. Contact organization: Statistical Office of Montenegro - MONSTAT
1.2. Contact organization unit: Department for Price Statistics and Foreign Trade
1.2. Contact organization unit: IV Proleterske 2, 81000 Podgorica, Montenegro

                                                                                      2. Metadata update                                                                       Top
2.1. Metadata last certified:
2.2. Metadata last posted:14 December 2022
2.3. Metadata last update:24 August 2022

                                                                                3. Statistical presentation                                                                  Top
3.1. Data description:The purpose of producer price index survey is to collect the data on monthly price changes of industrial products produced and sold by enterprises on the domestic market. Producer price index is an important economic indicator which can be used as a measure of inflation, as deflator of time series, especially for the needs of national accounts and industry, and as a tool for adjusting prices when concluding various sales contracts.
3.2. Classification system:NACE Rev. 2, CPA Version 2008
3.3. Sector coverage:Indices are calculated for the following sections of industrial activity: B (Mining and quarrying), C (Manufacturing), and D (Electricity, gas, steam and air conditioning supply) of NACE Rev. 2 classification.
3.4. Statistical concepts and
Producer prices of manufactured products are the prices that industrial manufacturers apply in selling the products of their own production range to commercial and other enterprises in the domestic market. The selling price is increased for the amount of the compensation obtained by the seller and deducted for the amount of the discount and rebate as well as the value added tax and excises. Producer price indices are relative numbers that show changes in producer prices from period to period. Price indices are calculated for certain products (individual indices), for groups of products and for all products included in the index sheet (total index). The monthly index shows by how much on average prices in the current month changed in comparision with the previous month. The quarterly index shows by how much on average prices in the current quarter changed in comparison with the previous quarter. The annual index shows by how much on average price has changed in the last 12 months. The average annual index shows by how much on average prices have changed in the last n months of the current year compared to the same period of the previous year.
3.5. Statistical unit:Reporting units are enterprises and KAU with the main activity in sections B (Mining and quarrying), C (Manufacturing) and D (Electricity, gas, steam and air conditioning supply) of NACE Rev. 2 classification.
3.6. Statistical population:Reporting units are enterprises and KAU with the main activity in sections B (Mining and quarrying), C (Manufacturing) and D (Electricity, gas, steam and air conditioning supply) of NACE Rev. 2 classification.
3.7. Reference area:PPI covers the whole territory of Montenegro.
3.8. Time coverage:Producer price index in Montenegro is being calculated since 1982. The data in the form of monthly releases are available from 2008, but English version is available from 2011 at the next link:
3.9. Base period:The previous year is used as the base year.

                                                                                      4. Unit of measure                                                                        Top

                                                                                     5. Reference period                                                                       Top

                                                                                  6. Institutional mandate                                                                    Top
6.1. Legal acts and other
The Law on Official Statistics and Official Statistical System (Official Gazette of Montenegro No 18/12 and 47/19) defines provisions for collection, processing, and dissemination of data. The Law provides to the Statistical Office legal powers to collect and access the data necessary for the implementation of Programme and Annual Plan. The Law gives a priority to the use of administrative data and right of access to individual data that are a result of survey of other official statistical producers. As an annex to legal provisions, Statistical Office has signed several memoranda on cooperation with administrative data providers.
6.2. Data sharing:Signed agreement on cooperation with the official statistical producers: 1. Ministry of Finance 2. Central Bank of Montenegro 3. Trilateral agreement (MONSTAT, Ministry of Finance, and Central Bank of Montenegro) International institutions: 1. EUROSTAT 2. UN organizations 3. IMF 4. World Bank

                                                                                        7. Confidentiality                                                                          Top
7.1. Confidentiality - policy:Articles 53-60 of the Law on Official Statistics and Official Statistical System (Official Gazette of Montenegro No 18/12 and 47/19) provide a framework for protection, use, and transmission of confidential data. Statistical office has produced two comprehensive rulebooks that cover the procedures for individual data protection as well as keeping individual records. With purpose of the meeting legal framework on functioning of security system and statistical confidentiality there was adopted the Rulebook on Keeping Statistical Data by which Manner, Time, Technical Conditions and Organization of Statistical Data Storage to Prevent Their Destroying, Misappropriation, and Unauthorized Use is Regulated as well as the Rulebook on Contents and Manner of Keeping Records on Users of Individual Statistical Data by which contents and manner of keeping records on users of individual statistical data is regular. Pursuant to the Article 59, an access to the confidential data is limited to persons performing duties and tasks of official statistical producer and up to the stage the data are necessary for official statistical production. Persons that performs duties and tasks within official statistical producers must sign the statement on respecting the principle of confidentiality. Law on Official Statistics and Official Statistical System is aligned with the Regulation No 223/2009 and the Regulation (EU) 2015/759 from 29 April 2015 that also regulate confidentiality provisions. The Government of Montenegro adopted the Statement on Commitment of Confidence in Official Statistics (Commitment of Confidence).
7.2. Confidentiality - data
Employees of the Statistical Office of Montenegro sign confidentiality statements and legal actions are forseen for the intentional violation of the confidentiality of statistical data. Article 54 of the Law on Official Statistics and Official Statistical System (Official Gazette of Montenegro No 18 /12) stipulates that the data collected, processed, and stored for the purposes of official statistics are considered confidential, if it is possible, on the basis of these data, to directly or indirectly identify reporting units, thus reveal individual data. The reporting unit is directly identified by name, address, or by the assigned identification number. If the reporting units gave explicit consent for the use of specific data, that data shall not be considered confidential.

                                                                                        8. Release policy                                                                         Top
8.1. Release calendar:The Law on Official Statistics and Official Statistical System (Official Gazette of Montenegro No 18/12) stipulates that official statistical producers prepare, update, and publish Statistical Release Calendar. It is published on the website of Statistical Office not later than 20 December for the next year, for all official statistical producers that includes date of releasing statistical data. Any change in date of releasing in the Calendar is published in advance in accordance with the Procedure on Unplanned Revisions.
8.2. Release calendar - access:Statistical Release Calendar is available at the following link:
8.3. User access:General aim of official statistical producer is to meet the needs of users, and to make an access to statistical data to users in an understandable manner, simultaneously and under the same conditions. Statistical Office is obliged to produce and disseminate official statistics in objective, transparent and professional manner, so that all users are equally treated.

                                                                            9. Frequency of dissemination                                                             Top

                                                                                  10. Accessibility and clarity                                                                Top
10.1. News release:Data are available in the form of monthly releases on the official website: From 2021 data are published in form of quarterly releases, and monthly data are available in Monthly Statistical Review on the following link:
10.2. Publications:Statistical Office publishes the following regular publications: 1. Statistical Yearbook, 2. Montenegro in figures, 3. Monthly statistical review. In addition to the above regular ones, Statistical Office publishes also additionally publications. Some of the most important additional publications are as it follows: 1. Women and Men in Montenegro, 2. The most often used statistical data. All publication published by Statistical Office are available at the following link:
10.3. Online database:Monthly releases from January 2011: Annual and monthly indices from January 2001:
10.4. Micro-data access:The Law on Official Statistics and Official Statistical System (Official Gazette of Montenegro No 18/12) regulates rules under which external users can obtain an access to individual data for needs of research. Article 58 defines types of scientific and research organizations that can obtain such data. Providing individual data without identifier is possible only upon a written request of scientific and research institutions, with purpose of performing scientific and research activities as well as international statistical organizations and statistical producers from other countries. Research entity signs the agreement with Statistical Office, and it signs the statement on respecting the confidentiality principle. Official statistical producers keeps a separate records on users and purpose of using the statistical data given to these users.
10.5. Other:Data on producer price indices are regularly (monthly) submitted to EUROSTAT via the eDAMIS web portal.

10.6. Documentation on methodology:
Short methodology of survey is available on the following link:
10.7. Quality documentation:The Law on Official Statistics and the Official Statistical System (Official Gazette of Montenegro No. 18/12 and 47/19) defines the commitment to quality, which ensures that producers of official statistics in Montenegro work and cooperate in accordance with international principles of quality of the statistical system. In accordance with the ESS Quality Declaration, Article 338 of the Treaty on the Functioning of the EU, Regulations 759/2015 and 223/2009 and the European Statistics Code of Practice, the following documents are adopted: 1. Quality Strategy of the Statistical Office 2. Guide for the implementation of the Quality Strategy in the Statistical Office; 3. Implementation plan

                                                                                  11. Quality management                                                                 Top
11.1. Quality assurance:Statistical Office has chosen the implementation of elements of TQM (Total Quality Management) model that foster development and improvement of functioning of: - Institution, - Official statistical result production, and - Individual. Within middle-term deadline, Statistical Office has chosen the TQM implementation through the following objectives: 1. Strong commitment to users and other interested parties, 2. Quality statistical processes and products, 3. Professional orientation of staff members, 4. Constant improvements, 5. Reduction of overburden of reporting units. Producer price indices are very relevant for domestic and international users, as well as internally for the needs of national accounts. The aim is to gather reliable research data and provide a high level of accuracy. The calculation of the index is based on the recommended international methodology. Publishing of the results is always accurate, timely and easily accessible. The aim is to ensure international comparability using the EU and relevant international concepts, definitions and classifications. Comparability with other statistical domains is ensured above all with PRODCOM.
11.2. Quality assesment:Not available.

                                                                                        12. Relevance                                                                              Top
12.1. User needs:International users: - Eurostat, - World Bank, - UN organizations, - International Monetary Fund. National users: - Ministries and other public administration bodies, - Local government, and other local government bodies, - Central bank, - Non-governmental organizations, - Students, - Researchers, - Media.
12.2. User satisfaction:The Statistical Office has adopted the Quality Management Strategy, the Guidebook to the Implementation of the Quality Management Strategy, as well as the Plan for the Implementation of the Quality Policy. In order to measure the degree to which fulfills obligations towards users and within the new quality policy, the Statistical Office conducted User satisfaction survey. The results of the survey are available on the Statistical Office website, link:
12.3. Completeness:All national requirements are fulfilled.

                                                                                  13. Accuracy and reliability                                                              Top
13.1. Overall accuracy:The accuracy of PPI is generally considered to be high. The accuracy of source data is monitored by assessing the methodological soundness of price and weight sources and the adherence to the methodological recommendations. An appropriate actions are taken to identify and eliminate potential sources of errors.
13.2. Sampling error:Sampling error can not be calculated because the survey was not conducted on the basis of a random sample.
13.3. Non-sampling error:The response rate is about 70%. Depending on size or representativeness, companies are contacted by phone in order to provide data on time. The price of the temporarily unavailable product is determined by contacting the company from which it is required to estimate/assess the missing price or to repeat the last declared price. In cases where an industrial enterprise ceases to produce a product of a certain quality for which prices are collected, or if the product of that quality is 'non-marketable goods' then a new product of a certain quality that is best sold is defined, and it is expected to be sold in a longer period of time and in large quantities. Prices for the new selected quality product are given simultaneously for the current and previous month. Companies are obliged to explain any change in quality.

                                                                              14. Timeliness and punctuality                                                          Top
14.1. Timeliness:The data are published on a date which is defined by Statistical Release Calendar - quarterly.
14.2. Punctuality:All data are published according to Statistical Release Calendar for 2021.

                                                                                      15. Coherence and Comparability                                                                          Top
15.1. Comparability -
The methodology of survey is compliant with the EU Regulations to a great extent which makes it comparable between the countries.
15.2. Comparability over time:The data according to NACE Rev. 2 classification are available from 2010.

15.3. Coherence - cross
Coherence between domains was achieved with the annual PRODCOM survey on industrial production. Data from PRODCOM survey are used in calculation of weights and updating of the sample.
15.4. Coherence - internal:The data are internally harmonized. Higher levels of aggregation are derived from elementary indices according to pre-defined procedures.

                                                                                        17. Data revision                                                                          Top
17.1. Data revision - policy:Statistical Office has adopted the revision policy and it is available on the website:
17.2. Data revision - practice:Published data are considered as final, except in the case of methodological changes and the introduction of new classifications, when they are subjected to revision.

                                                                                 18. Statistical processing                                                                 Top
18.1. Source data:The main source of data for the calculation of the producer price index of industrial products is the monthly survey on producer prices of industrial products. This survey includes companies classified in the sections of mining and quarrying, manufacturing and supply of electricity, gas, steam and air of the NACE Rev. 2 classification, with more than five employees that meet the unit of measurement prescribed by the Nomenclature of industrial products per unit of product. It also includes companies classified in other sections of the NACE Rev. 2 classification, which are composed of industrial drives or other organizational forms that are engaged in industrial production. Sample and weights are based on annual industrial survey. The most important products in each division have been selected for price changes monitoring, i.e. products with the highest sale on the domestic market. Producers are selected according to their participation in the production of certain products.
18.2. Frequency of data
18.3. Data collection:Reporting method is used for data collection. Questionnaires are filled by reporting units between the 14th and 16th of each month for the current month. The selling prices of manufactured products are the prices at which the producers sell their products to regular customers on the domestic market in the largest quantities. Reporting unites provide prices for the current and previous month. If there were no sales in the reporting month, the reporting unit should enter the price at which sales would be carried out if the customer appeared.
18.6. Adjustment:The adjustment of data is not made.


                                                                                           19. Comment                                                                             Top