*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0006917923
Feb302161305525
Mar1335300357
Apr121341900444
May21936700397
Jun704029800408
Jul691429000373
Aug4938700400
Sep1094900950
Oct0164800649
Nov0038100381
Dec0025708331090
Total181894565720556897