Over this time the Authorities have responded to major investment opportunities such as the EU Convergence and subsequent programmes and other opportunities from Welsh Government.
Dros y cyfnod hwn mae'r Awdurdodau wedi ymateb i gyfleoedd buddsoddi mawr megis Cydgyfeirio'r UE a rhaglenni dilynol a chyfleoedd eraill gan Lywodraeth Cymru.