*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002012821302
Feb004624531997
Mar1572600732
Apr01774800765
May81282285001575
Jun361115443001594
Jul24128985001137
Aug7376700777
Sep0069500695
Oct0147600477
Nov0149100492
Dec00271315661840
Total762552634927337912383