We use this information to make the website work as well as possible and improve our services.
You’ve accepted all cookies. You can change your cookie settings at any time.
Cyswllt: Rhys Dalgleish
Dyddiad y datganiad: 22 January 2021
Cyhoeddiad nesaf: 19 February 2021
Detailed revisions analysis for three months, Great Britain; includes a 12-month comparison.
Previous versions of this data are available