*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0008533541
Feb001512167320
Mar72329300323
Apr51229500312
May3742417000631
Jun9173714100969
Jul1077479900980
Aug323858600656
Sep10445100465
Oct0023700237
Nov0016700167
Dec001212871994
Total289131234111215716595