*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00005858
Feb035403087
Mar0259700122
Apr028256500847
May298929000408
Jun1563343200621
Jul1111727400402
Aug28726700302
Sep8214600156
Oct1011400115
Nov00930093
Dec002914171
Total333458236111293282