September 14, 2005
Bank of Japan
Research and Statistics Department

The Input-Output Price Index of the Manufacturing Industry by Sector (IOPI) focuses on the prices of products in the manufacturing industry. The IOPI consists of the Input Price Index and the Output Price Index, which covers prices of goods used for production and those made by production, respectively. See the explanation of The Input-Output Price Index of the Manufacturing Industry by Sector in the BOJ website for details.

Click on ntiopi05.pdf (133KB) to download the full text including reference and appendices. For accompanying figures, click ntiopi05.zip (66KB [MS-Excel]).

I. Purpose and basic strategy of the revision

The Bank of Japan has revised the Input-Output Price Index of the Manufacturing Industry by Sector (IOPI) from the 1995 base to the 2000 base.

(1) The base year for weights and indexes are updated from the 1995 base to the 2000 base. For some indexes, the compilation procedures are also changed, reflecting the revision of its basic weight data source, the I-O Tables.

(2) In this revision, several efforts are made in order to maintain the statistical accuracy and to enhance the convenience for the users. For example, both the Input Price Index and the Output Price Index exclude consumption tax. In addition, the preliminary figures are released in the following month of the surveyed month.

Table of Contents

• I. Purpose and basic strategy of the revision
• II. Detailed contents of the revision
  • 1. Changes in sector classification and commodity grouping
  • 2. Changes in weights
  • 3. Changes in the compilation procedure regarding the consumption tax
  • 4. Revision with the publication procedure
• III. Characteristics of the index
  • 1. Development of the index
  • 2. Comparison with the 1995 base IOPI
• (Reference) The classification of scrap and by-products
  • 1. Input Price Index
  • 2. Output Price Index
    • (Appendix 1) Changes in the number of commodity groups
    • (Appendix 2) Changes in commodity groups
    • (Appendix 3) Changes in weights of aggregated major commodity groups in the manufacturing industry sector
    • (Appendix 4) Changes in weights of major sectors
    • (Appendix 5) Indexes for the manufacturing industry sector
    • (Appendix 6) 2000 base Indexes for major sector
    • (Appendix 7) Paasche check for the 1995 base IOPI
• <Figures> Revision of the Input-Output Price Index of the Manufacturing Industry by Sector (IOPI) to the 2000 base

Click on ntiopi05.zip (66KB [MS-Excel]) to download the figures.