*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004168172
Feb00963100199
Mar0017400174
Apr0016800168
May014270041
Jun141330075
Jul153122300269
Aug9712700143
Sep00440044
Oct0025000250
Nov0025800258
Dec00600278338
Total2593146075462131