Number of pupils and number of pupils taught Welsh as a first language by year group and local authority, 2012 to 2021, file type: ODS, file size: 77 KB
Cyfanswm y disgyblion a nifer y disgyblion a addysgir Cymraeg fel iaith gyntaf yn ôl grŵp blwyddyn ac awdurdod lleol, 2012 i 2021, math o ffeil: ODS, maint ffeil: 77 KB