*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0025119126
Feb002723867
Mar0346054003514
Apr3942142001087
May914720000356
Jun3018326800481
Jul23348800145
Aug9710400120
Sep23550060
Oct059900104
Nov02680070
Dec00340384418
Total764783114175416548