How many weeks' holiday a year are there? http://www.larkspurdata.com/dmp1.html singulair price Although trading revenue is by its nature a volatile lineitem, it has become even harder for analysts to predict sincethe financial crisis, said Oppenheimer analyst Chris Kotowski.Three years ago, he expected trading revenue would havestabilized by now - especially as the industry consolidated -but instead it "looks more like a Ping-Pong ball bouncing downthe stairs" than any kind of decipherable trend line, he said.If trading revenue has dropped in the third quarter, it will bethe 10th decline in the last 14 quarters, he said.