*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001108109
Feb002102546
Mar0317400177
Apr64464400694
May208684600952
Jun655350200620
Jul44723900290
Aug14127700292
Sep2225100255
Oct0112400125
Nov00500050
Dec00300188218
Total151197315813213828