*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00011565576
Feb011632167333
Mar93431300356
Apr63329700336
May4548017000695
Jun102782143001027
Jul1127379900984
Aug343859100663
Sep10444900463
Oct0023900239
Nov0017200172
Dec001212868991
Total318144534571516006835