*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001620482064
Feb0295539071867
Mar4133422003439
Apr8363860003904
May856571586007242
Jun1249093696009913
Jul328112574003417
Aug452106002115
Sep192268002278
Oct011906001907
Nov0090300903
Dec00444219782424
Total258165411972021493341473