docs: def download_wiod2013(storage_folder, years=None, overwrite_existing=False,
                        satellite_urls=WIOD_CONFIG['satellite_urls']):
      """ Downloads the 2013 wiod release
  
      Note
      ----
      Currently, pymrio only works with the 2013 release of the wiod tables. The
      more recent 2016 release so far (October 2017) lacks the environmental and
      social extensions.
  
  
      Parameters
      ----------
      storage_folder: str, valid path
          Location to store the download, folder will be created if
          not existing. If the file is already present in the folder,
          the download of the specific file will be skipped.
  
  
      years: list of int or str, optional
          If years is given only downloads the specific years. This
          only applies to the IO tables because extensions are stored
          by country and not per year.
          The years can be given in 2 or 4 digits.
  
      overwrite_existing: boolean, optional
          If False, skip download of file already existing in
          the storage folder (default). Set to True to replace
          files.
  
      satellite_urls : list of str (urls), optional
          Which satellite accounts to download.  Default: satellite urls defined
          in WIOD_CONFIG - list of all available urls Remove items from this list
          to only download a subset of extensions
  
      """
  
      try:
          os.makedirs(storage_folder)
      except FileExistsError:
          pass
  
      if type(years) is int or type(years) is str:
          years = [years]
      years = years if years else range(1995, 2012)
      years = [str(yy).zfill(2)[-2:] for yy in years]
  
      wiod_web_content = _get_url_datafiles(
          url_db_view=WIOD_CONFIG['url_db_view'],
          url_db_content=WIOD_CONFIG['url_db_content'],
          mrio_regex='protected.*?wiot\d\d.*?xlsx')
  
      restricted_wiod_io_urls = [url for url in wiod_web_content.data_urls if
                                 re.search(r"(wiot)(\d\d)",
                                           os.path.basename(url)).group(2)
                                 in years]
  
      meta = MRIOMetaData(location=storage_folder,
                          description='WIOD metadata file for pymrio',
                          name='WIOD',
                          system='ixi',
                          version='data13')
  
      meta = _download_urls(url_list=restricted_wiod_io_urls + satellite_urls,
                            storage_folder=storage_folder,
                            overwrite_existing=overwrite_existing,
                            meta_handler=meta)
  
      meta.save()
      return meta