*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00125356
Feb201701130
Mar5123700243
Apr11342800442
May913146200602
Jun3416359100788
Jul341413600184
Aug102750087
Sep1020000201
Oct0017200172
Nov0011000110
Dec00340269303
Total96324246323333218