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: Michael Rizzo
Dyddiad y datganiad: 30 September 2019
View previous versions
Cyhoeddiad nesaf: 20 December 2019
ID y gyfres: L7PX
Beth yw hyn?
Custom time period
Download full time series as:
Download filtered time series as: