*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan831500098
Feb300027057
Mar00034236
Apr0010571481
May006910652227
Jun00143211128482
Jul00131233173537
Aug004313336212
Sep0031082113
Oct00077077
Nov00048149
Dec29150380334
Total4042039910724082303