*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000283283
Feb00721104177
Mar0114100142
Apr11054500556
May162294400982
Jun183068900737
Jul233750500565
Aug26757100604
Sep4087600880
Oct0025000250
Nov0013600136
Dec10762391470
Total89107480537785782