Poorer areas like Blaenau Gwent forecast to see substantial declines in http://service.meltwaternews.com/mnews/redirect.html?docId=2928710189&userId=683154&cId=197010&agentId=103736&type=2&s=76754&url=http%3A%2F%2Fwww.walesonline.co.uk%2Fnews%2Fwales-news%2Fwelsh-cities-see-population-explosion-5269533
