*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001120121
Feb002802856
Mar0320700210
Apr64479200842
May21891021001131
Jun765459000720
Jul49729300349
Aug15136500381
Sep2234100345
Oct0116600167
Nov00600060
Dec00340200234
Total169201389713484616