*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0006713719
Feb301731239416
Mar1326300267
Apr121334000365
May18829500321
Jun703826300371
Jul691422900312
Aug4828700299
Sep1072500726
Oct0147500476
Nov0025000250
Dec001690668837
Total178853469716205359