*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000283283
Feb00691105175
Mar0114000141
Apr11054300554
May172393500975
Jun183069000738
Jul243750700568
Aug26756500598
Sep4086400868
Oct0025000250
Nov0013300133
Dec10742391468
Total91108477037795751