*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004213217
Feb0068366137
Mar0112900130
Apr0729500302
May42443242002689
Jun72854270003131
Jul25499728001252
Aug94646300563
Sep1133400336
Oct0020600206
Nov0010900109
Dec00631581645
Total1315811290788609717