*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00014510524
Feb101952192390
Mar0341300416
Apr1429100296
May5643500446
Jun61126400281
Jul6118400191
Aug5222000227
Sep0238600388
Oct0180600807
Nov1040700408
Dec001550542697
Total253037561612445071