In total, the data cover 182 countries with 8,817 observations. Trends in global interpersonal inequality during 19752005 are measured using data from unuwider world income inequality database. While different theories may try to explain how income inequality comes about, income inequality metrics simply provide a system of. Wiid and swiid are convenient and accessible sources for researchers seeking crossnational data with global coverage. Wiid world income inequality database unuwider united. Unuwider wiid the world income inequality database. The current version includes observations for six additional countries, with the latest observations now reaching the year 2015. The observations now reach the year 2017 and coverage is. Unu wider hosts the world income inequality database wiid and the government revenue dataset grd. Unuwider databases unuwider hosts the world income inequality database wiid and the government revenue dataset grd. Three main sources provide worldwide crosscountry inequality data. The data cover new countries, and nearly 2000 new observations have been. World income inequality database wiid map and data library. Some minor corrections can be done without a change of the database version.
Screen capture from the wiid data visualization tool. Unu wider united nations university world institute for development economics research katajanokanlaituri 6 b, fi00160 helsinki, finland tel. Wiid and swiid are convenient and accessible sources for researchers seeking crossnational data. Measuring socioeconomic inequalities with predicted. Income inequality metrics or income distribution metrics are used by social scientists to measure the distribution of income and economic inequality among the participants in a particular economy, such as that of a specific country or of the world in general. Wdi covers a wide range of topics including income and expenditures. More information on unuwiders current work programme, is available at. World income inequality database wiid with this current wiid version, the observations now reach the year 2018 and coverage is extended to 201 countries including historical entities, with over 11,000 data points in total. Appraising world income inequality databases unuwider. The updated wiid, version 3a now available for download, gives researchers access to data on eight new countries and over 2,000 additional observations, as well as numerous corrections to the. It represents the most comprehensive set of income inequality statistics available. Unu wider, the first research and training centre to be established by the. Unuwider hosts the world income inequality database wiid and the government revenue dataset grd. Income and expenditures numeric data guides at mcgill.
Hosted by unuwider, wiid provides income inequality indices the gini index and quintile shares for as many countries and years as possible from various sources. This paper discusses different approaches to the measurement of global interpersonal in equality. For the past four decades, unu has been a goto think tank for impartial research on the pressing global problems of human survival, conflict prevention, develo. This article assesses two world income inequality databases. Conference on inequalitymeasurement, trends, impacts, and policies journal of economic inequality panel. Wiid world income inequality database type of data.
Why are there several estimates reported per country and year. The unu wider world income inequality database wiid collects and stores data on income inequality for developed, developing and transition countries. United nations university world institute for development economics research unuwider. Where do i find data on the distribution of wealth in the oecd. This article assesses two secondary data compilations about income inequality the world income inequality database wiidv2c, and the standardized world income inequality database swiidv4. The unu wider world income inequality database wiid presents information on income inequality for developed, developing, and transition countries. Wiid version 2c, may 2008 produced by unuwider 2008, and the standardized wiid. The latest version of the wiid can be downloaded here.
Unuwider hiring research associate in helsinki, southern. World institute for development economics research wikipedia. Appraising crossnational income inequality databases. Please cite this database version as unuwider, world income inequality. The world income inequality database wiid presents information on income inequality for developed, developing, and transition countries.
World income inequality database wiid version 4 unuwider. Data on gini coefficients and shares of income going to different parts of the income distribution for a very large number of countries and years. Notes on the policy seminar on inequality and development. The unuwider world income inequality database wiid collects and stores information on income inequality for developed, developing, and transition countries. United nations university world institute for development. Skills in r, or other statistical software, is an asset. Unu wider is currently undergoing several efforts to improve and expand the dataset to make it more relevant and userfriendly for researchers, institutions and others. Please cite this database version along with the version date as.
The unuwider world inequality database does not publish income inequality estimates for all years. The world income inequality database wiid presents information on. By doing so, it becomes possible to track very precisely the evolution of all income or wealth levels, from the bottom to the top. This article presents the standardized world income inequality database swiid, which standardizes the united nations university database unuwider 2008 while minimizing reliance on problematic assumptions by using as much information as possible from proximate years within the same country. Where do i find data on the distribution of wealth in the. Includes longrun historical crosscountry data on top income shares and marginal income tax rates, among other things. In the late 1990s wider undertook a major study of income inequality trends throughout the world. Wiid world income inequality database user guide inequality indicators, such as the gini index and the decile and percentile shares, are not available for all countries in each year.
It presents detailed information on income inequality for developed, developing, and transition countries. The world income inequality database wiid contains information on income inequality in various countries, and is maintained by the united nations universityworld institute for development economics research unuwider. Enter the full name of your employeraffiliation, and select it from the list, e. The wiid collects and stores information on income inequality. World income inequality database the unuwider world income inequality database wiid collects and stores information on income inequality for developed, developing, and transition countries. Its coverage is more than povcalnet but it is less harmonized. The fourth major edition of this database wiid4 was released in december 2018. Wiid provides the most comprehensive set of income. The database was originally compiled during 199799 for the research project rising income inequality and poverty reduction. More information on unuwiders current work programme is available on the institutes website. With this current wiid version, the observations now reach the year 2018 and coverage is extended to. The united nations university world institute for development economics research unuwider is part of the united nations university unu. The wiid collects and stores inequality data from all over the world.