*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001212
Feb004015
Mar02140016
Apr15386600920
May07244212007456
Jun6174822330017721
Jul2735721720005319
Aug18646800492
Sep111088001090
Oct0056800568
Nov01200021
Dec01706169
Total5328362520007433689