Less than 5% of projects were delivered entirely or mainly through the medium of Welsh in Caerphilly, Merthyr Tydfil, Monmouthshire, Pembrokeshire and Swansea.
Cyflawnwyd llai na 5% o brosiectau yn gyfan gwbl neu'n bennaf drwy gyfrwng y Gymraeg yng Nghaerffili, Merthyr Tudful, Sir Fynwy, Sir Benfro, ac Abertawe.