*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00012827839
Feb003150281596
Mar1131134001148
Apr3501682001735
May32631815001910
Jun1431121489001744
Jul176181053001247
Aug671277600855
Sep16469700717
Oct3055700560
Nov1040100402
Dec0016919511121
Total4422721008813205912874