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PPPs for policy making: a visual guide to using data from the ICP - Technical note


Presentation of data

The figures presented in this publication reflect data available as of December 2020. The data are published by the referenced sources and are presented here for illustrative purposes only. For the most recent data please visit the referenced source. Note that many of the indicators are available via the World Bank’s World Development Indicators (WDI), and the indicator codes are given in the source footnotes. ICP 2017 refers to ICP results from the 2017 cycle, released in May 2020. Otherwise, the data compiler or agency producing the indicator is given as the source. The static maps presented in this publication were produced by the Cartography Unit of the World Bank Group. The boundaries, colors, denominations and any other information shown on these maps do not imply, on the part of the World Bank Group, any judgment on the legal status of any territory, or any endorsement or acceptance of such boundaries. The interactive maps are for illustrative and data access purposes only.

PPPs are based on US$ = 1. PPP-based expenditures reflect conversions of expenditures in local currency units using PPP estimates at the level of GDP unless otherwise noted.

The ICP publishes data for a given reference year or ICP cycle. The three most recent ICP cycles are ICP 2017, ICP 2011, and ICP 2005. The ICP 2011 data first published in 2014 were revised as part of the ICP 2017 cycle mainly to reflect updated national accounts expenditure data. A limited set of PPPs is published for the intervening years 2012 to 2016. Several indicators in this publication use ICP 2017 PPPs, while some use ICP 2011 and ICP 2005 PPPs. In addition, the Statistical Office of the European Union (Eurostat) and the Organisation for Economic Co-operation and Development (OECD) publish annual PPPs for their member countries. Furthermore, WDI uses ICP results to extrapolate PPPs at the levels of GDP and Households and Nonprofit Institutions Serving Households (NPISHs) Final Consumption Expenditure (private consumption) for years other than ICP cycles, as does the International Monetary Fund (IMF) at the level of GDP.

Data reported in current terms refer to the PPPs for each year being applied to the values expressed in the prices of a single year, for example, 2016 PPPs, reflecting 2016 prices, are used for 2016 data in current prices, and 2017 PPPs, reflecting 2017 prices, are used for 2017 data in current prices and so forth. Data reported in constant terms refer to a base year’s PPP being applied to the values expressed in the prices of that base year, for example 2017 PPPs, reflecting 2017 prices, are applied to data in constant 2017 prices for all years within the range shown. Data presented in the figures are in current terms unless otherwise noted.

Regions follow the World Bank’s geographical region classification, and income groups reflect the World Bank Group’s current 2021 fiscal year classification based on gross national income (GNI) per capita, calculated using the World Bank Atlas method. Appendix J of the ICP 2017 report Purchasing Power Parities and the Size of World Economies provides a list of the constituent countries for each region and current income groups are available from the World Bank’s data helpdesk.