Provides files to download data as it existed for this dataset on previous dates.

Statistics are most often revised for 1 of 2 reasons:

  1. For certain statistics initial estimates are released with the expectation that these may be revised and updated as further data becomes available.
  2. Revisions may also be made when methods or systems are changed.

These types of planned revisions should not be confused with errors in released statistics, which are genuine mistakes. Such mistakes occur rarely and, when they do happen, corrections are made in a timely manner, announced and clearly explained to users in line with the Code of Practice for Official Statistics (Principle 2, Practice 7).

Latest version

xls (161.3 kB)

Previous versions

Superseded files Reason for update Date superseded
xls (175.6 kB) Scheduled update/revision 15 November 2017 09:30
xls (174.6 kB) Scheduled update/revision 16 August 2017 09:30
xls (174.6 kB) Scheduled update/revision 17 May 2017 09:30
xls (174.1 kB) Scheduled update/revision 15 February 2017 09:30
xls (173.1 kB) Scheduled update/revision 16 November 2016 09:30