*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001919
Feb000022
Mar00570057
Apr4181700822
May2471716001747
Jun5432231002288
Jul1821440001460
Aug1089700898
Sep1045100452
Oct0012200122
Nov00340034
Dec00704350
Total1021377720647951