keywords: greenspan dollar deficit decline yen
text: Greenspan Sends Dollar to Multiyear Lows  NEW YORK (Reuters) - The dollar slumped across the board,  plunging to four-and-a-half-year lows against the yen on  Friday, after Federal Reserve Chairman Alan Greenspan said  demand for U.S. assets could decline at some point given the  size of the current account deficit.