*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0006920926
Feb302161305525
Mar1335400358
Apr121342000445
May21936700397
Jun704029800408
Jul691429000373
Aug4939100404
Sep1095000951
Oct0165100652
Nov0038300383
Dec0025808341092
Total181894578720596914