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For any question on data and metadata, please contact: Eurostat user support |
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1.1. Contact organisation | National Statistical Institute of Bulgaria |
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1.2. Contact organisation unit | Population and Housing Fund Statistics Department |
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1.5. Contact mail address | 2, P.Volov Str. 1038 Sofia, Bulgaria |
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2.1. Metadata last certified | 30/06/2023 | ||
2.2. Metadata last posted | 12/06/2024 | ||
2.3. Metadata last update | 12/06/2024 |
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3.1. Data description | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
First results on the main demographic developments in the year of reference. |
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3.2. Classification system | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Not applicable. |
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3.3. Coverage - sector | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Not applicable. |
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3.4. Statistical concepts and definitions | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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3.5. Statistical unit | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Number of persons. |
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3.6. Statistical population | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Not applicable. |
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3.7. Reference area | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Data are available at national level of geographical detail. |
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3.8. Coverage - Time | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Not applicable. |
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3.9. Base period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Not applicable. |
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Counts of statistical units |
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The reference date for population data is the end of the reference period (midnight of 31December). |
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6.1. Institutional Mandate - legal acts and other agreements | |||
Law on statistics Law on Civil Registration Law on Foreigners Bilateral agreements with data owners institutions EU Regulation 1260 EU Regulation 862 Regulation (EU) 2020/851 |
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6.2. Institutional Mandate - data sharing | |||
The agreements on data exchange are based on Personal Data Protection Law |
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7.1. Confidentiality - policy | |||
Law on Statistics Law on Personal Data Protection |
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7.2. Confidentiality - data treatment | |||
Law on Statistics, article 25, (2) (Supplemented, SG No. 98/2008) The National Statistical Institute and statistical authorities and their staff may not disclose or provide: |
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8.1. Release calendar | |||
Final data on population and demographic events are made available 4 months after the end of reference year |
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8.2. Release calendar access | |||
The release calendar is available on the NSI web page: https://www.nsi.bg/en |
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8.3. Release policy - user access | |||
Press releases on different topics (according to the Release calendar) are uploaded at the NSI web page at 11:00 AM |
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Final population and demographic data are disseminated yearly |
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10.1. Dissemination format - News release | ||||||||||||||||||
Regular press releases in April |
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10.2. Dissemination format - Publications | ||||||||||||||||||
Annual e-publication |
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10.3. Dissemination format - online database | ||||||||||||||||||
Infostat: https://infostat.nsi.bg/infostat/pages/module.jsf?x_2=3&lang=en |
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10.4. Dissemination format - microdata access | ||||||||||||||||||
Not applicable. |
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10.5. Dissemination format - other | ||||||||||||||||||
By users requests |
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10.6. Documentation on methodology | ||||||||||||||||||
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10.7. Quality management - documentation | ||||||||||||||||||
Not available. |
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11.1. Quality assurance | |||
Quality of data is assured through procedures for data validation, editing, coding and verifying. The procedures are performed following clearly prescribed rules. |
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11.2. Quality management - assessment | |||
The special cases included in the annex to Commission Regulation (EC) No 1201/2009 are treated according to the requirements. The only exception is the treatment of homeless or roofless persons - the last are referred to the place of address registration in the Population register. |
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12.1. Relevance - User Needs | |||
Not applicable. |
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12.2. Relevance - User Satisfaction | |||
Not applicable. |
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12.3. Completeness | |||
Not available. |
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13.1. Accuracy - overall | ||||||||||||||||||
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13.2. Sampling error | ||||||||||||||||||
Not applicable. |
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13.3. Non-sampling error | ||||||||||||||||||
Not applicable. |
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14.1. Timeliness | |||
Not available. |
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14.2. Punctuality | |||
Not available. |
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15.1. Comparability - geographical | |||||||||||||||
Data is collected and processed for the different territorial units using one and the same methodology and definitions. |
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15.2. Comparability - over time | |||||||||||||||
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15.3. Coherence - cross domain | |||||||||||||||
Not available. |
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15.4. Coherence - internal | |||||||||||||||
Data are fully consistent |
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Not applicable. |
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17.1. Data revision - policy | |||
Not available. Data for the population number for the period from 01 January 2012 till 01 January 2022 is revised in the end of 2023 and will be published in 2024. |
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17.2. Data revision - practice | |||
In census years recalculations of the population are done as of the end of the respective and previous year. Recalculations are based on the census results and the respective calculations of the natural and migration increase, received from the current demographic statistics for the respective year. The estimation of the population as of 31.12.2022 reflect changes in the number and structure of the population registered during Census 2021. |
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18.1. Source data | |||||||||||||||
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18.2. Frequency of data collection | |||||||||||||||
Monthly of births and deaths Annually of migration data |
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18.3. Data collection | |||||||||||||||
Administrative data sources are used for production of official statistics. Data files are provided to NSI containing information on demographic events - births, deaths, marriages, divorces, change of address in the country, intenational migration |
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18.4. Data validation | |||||||||||||||
Data validation is performed at three stages: At data transmission – preliminary checking and processing, proper application of the criterion for12 months length of stay . At data processing stage - criteria for doubling, correctness, validation rules for each record’s characteristic. Before data release - checking the frequencies of separate variables, consistency of table and cross-tabulations. |
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18.5. Data compilation | |||||||||||||||
Data are processed , edited and validated through the Information System Demography, respecting settled in advance system and logic criteria. Records linkage is done based on Identification Number of the persons subject of a demographic event. |
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18.6. Adjustment | |||||||||||||||
Еstimates (based on NSI sample survey on trips of Bulgarians abroad and visitors to Bulgaria) are done in production of breakdowns of emigrants by destination countries. Since 2015, estimates and assumptions on volume of emigrants are done to improve figures produced both for emigration and population number. |
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Not available. |
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