*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003131134
Feb0148088137
Mar0718900196
Apr02446800492
May31986146002135
Jun112957142003110
Jul23772850001645
Aug10440600420
Sep0031000310
Oct0014600146
Nov00640064
Dec00300281311
Total475751279935009100