More than half of chief executives (CEOs) in a new survey have predicted the global economy will continue on its current path of minimal growth in 2013.In PricewaterCooper’s annual global CEO survey, 52% predicted no change, 28% foresaw further decline and 18% expected an improvement. It is still an improvement from last year when 48% predicted a decline.The research came from interviews conducted with 1,330 chief executives in 68 countries. It was released at the start of the World Economic Forum in the Swiss ski resort of Davos.