How can I rescale a series to a different base year?

Our constant U.S. dollar price series preserve the growth rates exhibited in the constant local price series. To produce constant price aggregates, we first convert each country's constant local price data into constant 2010 U.S. dollars, and then sum by year along with implicit gap-filling of missing values. Rescaling to a different base year would reflect different country weights in aggregations based on the values in the base year chosen but data for missing countries would need to be estimated. For example, you can rescale the 2010 data to 2005 by first creating an index dividing each year of the constant 2010 series by its 2005 value (thus, 2005 will equal 1). Then multiply each year's index result by the corresponding 2005 current U.S. dollar price value.

Thank you for visiting the World Bank's Data Help Desk. Please review the terms of use for this website. Your continued use of this website constitutes your acceptance of these terms and conditions.

Developer Info

Feedback and Knowledge Base