*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004131135
Feb0055365123
Mar0012800128
Apr0013100131
May07330040
Jun137320070
Jul133619100240
Aug8811300129
Sep00420042
Oct0023400234
Nov0023000230
Dec00540258312
Total2288124374541814