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Compilation Method of "Developments in Real Exports and Real Imports" in Response to the Rebasing of the Corporate Goods Price Index to the Base Year 2020

June 16, 2022
Bank of Japan
Research and Statistics Department

The Corporate Goods Price Index (hereafter the CGPI), which includes the Export Price Index and the Import Price Index, is used for compiling Real Exports and Real Imports. Starting with the release of the preliminary figures for May 2022, the base year of the CGPI has been rebased from 2015 to 2020. In compiling Real Exports and Real Imports from May 2022 onward, the Research and Statistics Department of the Bank of Japan uses the 2015 base deflators extended by using month-on-month changes in the corresponding 2020 base price indices. This method will continue to be applied until the next seasonal adjustment, which is planned around April 2023.

For details on the compilation method of Real Exports and Real Imports, see Explanation of "Developments in Real Exports and Real Imports".

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