*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004396400
Feb001164151271
Mar03626400300
Apr732545000782
May1243331100756
Jun4252540200969
Jul446625800368
Aug14932500348
Sep3337500381
Oct0533900344
Nov0232900331
Dec001040529633
Total12214043273810765883