2004/04/20
Market,  AdvIssues, DeclIssues, UnchIssues,     AdvVol,    DeclVol,    UnchVol
  NYSE,        725,       2353,        121,  335662632, 1385229269,    6099520
  AMEX,        252,        558,         59,   27802280,  298457508,    6077200
NASDAQ,        908,       2250,        131,  326064580, 1557443321,   21774068