This file illustrates demography in Japan. Left graph shows demography in city/area (purple) vs Japan (green), right graph shows men (blue) vs women (red).
The file is created and uploaded by Lincun on Japanese Wikipedia. It may also be a file based on one of these files (see info in file history or author field for more info on later editors). Source:
English: Data used : Statistics Bureau, Ministry of Internal Affairs and Communications 2005 National Census 1st Basic Aggregation Results