Ministry of Internal Affairs and Communications Statistics Bureau
  • Inquiry
  • Sitemap
  • Japanese

Main contents start here

Notes for Users

  1. Statistical data were derived primarily from the "Historical Statistics of Japan (First Edition)"(1987-1988: supervised by the Statistics Bureau, Management and Coordination Agency and edited/issued by the Japan Statistical Association) and from the "Japan Statistical Yearbook" (edited by the Statistical Research and Training Institute, Ministry of Internal Affairs and Communications and issued by the Statistics Bureau in the same Ministry). For fields that are not covered by these books, statistics were derived from the statistical reports published by governmental offices/ministries or private organizations. Efforts were made as far as possible to collect the long time series up to the initiation of the series. However, there are some series that could not be traced back satisfactorily due to the discontinuance of data collection.
  2. Each chapter begins with a general description on the sources of statistics, methods and the coverage of surveys. For those statistics included in the "Historical Statistics of Japan (First Edition)" descriptions are simplified.
  3. In principle, the term used in the explanations and statistical tables is taken from the data sources.
  4. The name of each item indicated in the statistical tables is the same name used in the data source. When a name was changed within the same series, the most recent name is used in the table, and the old name is indicated in the footnote. As regards the name of an item in the statistics which was already terminated, the name used at the time of its termination is used.
  5. Detail figures in the tables may not add up to the totals because of rounding.
  6. Unless otherwise indicated, "year" refers to the calendar year, and "fiscal year" refers to the 12 months beginning April 1 of the year stated.
  7. The following symbols are used in the tables:
    0 : below unit
    0.0     - : figures not applicable
    ... : figures not available
    x : figures kept undisclosed
    # : designates "of which" , related to major headings shown to the left (Example 1)
    * : Where several items are summed, figures are presented only in the first column and the mark "*" is used in the other columns (Example 2).
    (Example 1)
    Example 1
    (Example 2)
    Example 2 
  8. Footnotes
    (1)Footnotes to the entire table are indicated with parenthesized numbers such as (1), (2) and (3).
    (2)To annotate particular items in the head or the stub of the table, the footnotes are indicated with semi-parenthesized numbers such as 1), 2) and 3).
    (3)Footnotes to particular figures are indicated with semi-parenthesized alphabets such as a), b) and c).
    (4)Regarding the source of data, the names of their publishers are listed.
    (5)When a certain calculation is applied to the original figures, such as the conversion of the unit and linking indices, the method of calculation is indicated in the footnote together with the conversion rate.
  9. Supplementary tables
    Supplementary tables are included in Chapter 14.
    In Chapter 14, the supplementary table contains statistics whose concepts and definitions are not officially defined.

BackHome

Top of this page