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.
Data a dadansoddiadau o Gyfrifiad 2021
Cyswllt: Michael Rizzo
Dyddiad y datganiad: 30 June 2017
View previous versions
Cyhoeddiad nesaf: 29 September 2017
ID y gyfres: IHXZ
Beth yw hyn?
Custom time period
Download full time series as:
Download filtered time series as: