JACKSON HOLE, Wyoming: An influx of foreign workers has given the euro zone's economy a boost in recent years, helping offset shorter working hours and lower real wages, European Central Bank President Christine Lagarde said on Saturday (Aug 23). Migration into the European Union pushed its population to a record last year despite declining births but governments are placing curbs on new arrivals in response to domestic discontent. Lagarde listed a rise in the number of workers from outside the