*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00020603623
Feb001770208385
Mar01726200279
Apr010339000493
May03060372003432
Jun45432606006042
Jul76842616003307
Aug14551719001788
Sep8394300954
Oct2032900331
Nov0028800288
Dec001350779914
Total359354783720159018836