NEW YORK (AP) - The stock market ended a tumultuous year right where it started. In the final tally, despite big climbs and falls, unexpected blows and surprising triumphs, all the hullabaloo proved for naught. On Friday, the Standard & Poor's 500 index closed at 1,257.60. That's exactly 0.04 point below where it started the year. "If you fell asleep January 1 and woke up today, you'd think nothing had happened," says Jack Ablin, chief investment officer of Harris Private Bank. "But it's been up and down all year. It's been crazy." It was a year when U.S. companies were …