2006/07/31
Market,  AdvIssues, DeclIssues, UnchIssues,     AdvVol,    DeclVol,    UnchVol
  NYSE,       1626,       1620,        157,  893014045, 1046696625,   35190535
  AMEX,        564,        447,         89,   81392790,   81958121,    2737057
NASDAQ,       1583,       1444,        143,  744657750,  871945893,   42113507