Chief Executive Magazine's CEO Index, the nation's only monthly CEO Index, sunk to another all-time low in December, according to 245 top executives surveyed. Executive confidence in America's economy is under 50 percent of what it was just three months ago, and less than 25 percent of what it was a year and a half ago. In all the turmoil, one CEO tried to keep a sense of levity: "Sooner or later there will be some good news."