*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000033
Feb00250328
Mar111311388001530
Apr283502002002380
May1133299359003771
Jun2006165416006781
Jul1228871797002806
Aug271178700825
Sep3284500850
Oct0033700337
Nov00120012
Dec000099
Total50410845796801519332