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Each decade comprises the current year and the nine years before.","descriptionProcessing":"For a small number of country-year observations, the World Bank PIP data contains two estimates: one based on income data and one based on consumption data. In these cases we keep only one of the estimates, to strike a balance between maintaining comparability over time and showing as long a time series as possible. This means the indicator is estimating the number of years at least one survey was conducted in the past decade, rather than the number of surveys.","type":"int","datasetName":"World Bank Poverty and Inequality Platform (PIP)","updatePeriodDays":180,"datasetVersion":"2025-10-09","nonRedistributable":false,"display":{"name":"Number of surveys in the past decade","unit":"surveys","tolerance":5,"numDecimalPlaces":0},"schemaVersion":2,"processingLevel":"major","presentation":{"attributionShort":"World Bank","topicTagsLinks":["Poverty","Economic Inequality","Economic Growth"],"faqs":[{"gdocId":"1gGburArxglFdHXeTLotFW4TOOLoeRq5XW6UfAdKtaAw","fragmentId":"poverty-international-dollars"},{"gdocId":"1gGburArxglFdHXeTLotFW4TOOLoeRq5XW6UfAdKtaAw","fragmentId":"poverty-comparability"},{"gdocId":"1gGburArxglFdHXeTLotFW4TOOLoeRq5XW6UfAdKtaAw","fragmentId":"poverty-regional-estimates"}]},"descriptionKey":["Depending on the country and year, the data refers either to income (after taxes and benefits) or to consumption, [per capita](#dod:per-capita). For most countries, we have only one option available. But when there is a mix of consumption and income data points, we process the data to keep one observation per country and year. Our [Poverty Data Explorer](https://ourworldindata.org/explorers/poverty-explorer?Indicator=Share+in+poverty&Poverty+line=%243+per+day%3A+International+Poverty+Line&Household+survey+data+type=Show+data+from+both+income+and+consumption+surveys&Show+breaks+between+less+comparable+surveys=true&country=ROU~CHN~BLR~PER) shows the original data with *all* available income and consumption measures separately.","Many people, today and in the past, have no monetary income. This data accounts for this by including the estimated value of non-market income, such as food grown by subsistence farmers for their own use."],"origins":[{"id":8890,"title":"World Bank Poverty and Inequality Platform (PIP)","description":"The Poverty and Inequality Platform (PIP) is an interactive computational tool that offers users quick access to the World Bank’s estimates of poverty, inequality, and shared prosperity. PIP provides a comprehensive view of global, regional, and country-level trends for over 170 economies around the world.","producer":"World Bank Poverty and Inequality Platform","citationFull":"World Bank (2025). Poverty and Inequality Platform (version 20250930_2021 and 20250930_2017) [Data set]. World Bank Group. https://pip.worldbank.org/.","versionProducer":"20250930_2021, 20250930_2017","urlMain":"https://pip.worldbank.org","dateAccessed":"2025-10-09","datePublished":"2025-09-30","license":{"url":"https://datacatalog.worldbank.org/search/dataset/0063646","name":"CC0"}}]}