FORGET those plans to have a third child for the country because further increases in the birth rate could harm the economy, the nation's productivity watchdog has warned. A major analysis of the nation's increasing fertility rate said it was at its highest level for 25 years - but the Productivity Commission yesterday warned further increases may aggravate rather than solve the problem of the ageing of the population. This is because it will shift women out of the workforce while they care for babies, depressing labour supply and reducing the taxation base as our population ages, the Daily Telegraph...