*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001404405
Feb011270133261
Mar0650600512
Apr02988600915
May122361000645
Jun302033800388
Jul24615900189
Aug4020100205
Sep1021700218
Oct0035600356
Nov0038200382
Dec001050418523
Total7185388719554999