*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004725729
Feb002810287568
Mar1248600489
Apr11443400449
May77706900846
Jun161224104001344
Jul1430261400930
Aug0565800663
Sep0059600596
Oct0044200442
Nov0032700327
Dec0016509541119
Total3923174176419668502