*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005859864
Feb032161296516
Mar0850400512
Apr31863200653
May61044164001214
Jun2617211302003049
Jul291561222001407
Aug9577700791
Sep0478800792
Oct1049000491
Nov0039600396
Dec00209112831493
Total74295967007243812178