2006/04/21
Market,  AdvIssues, DeclIssues, UnchIssues,     AdvVol,    DeclVol,    UnchVol
  NYSE,       1745,       1526,        144, 1200324190, 1176612570,   15688710
  AMEX,        546,        460,         97,  274823025,  123921670,    4132250
NASDAQ,       1413,       1621,        158,  676602998, 1681195803,   26571982