*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001620512067
Feb0295539071867
Mar4133423003440
Apr8363860003904
May856574587007246
Jun1249096696009916
Jul328112575003418
Aug452106002115
Sep192268002278
Oct011906001907
Nov0090300903
Dec00444219802426
Total258165471972321493841487