*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0012218521875
Feb58695127321452
Mar92571792001941
Apr3001171421001838
May285971515001897
Jun2951521726002173
Jul243881871002202
Aug25201068001113
Sep441089001097
Oct301064001067
Nov1055000551
Dec00461213971860
Total12535431325336398119066