*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0023101106
Feb002723564
Mar0535400107
Apr3941142001086
May914619900354
Jun3018226700479
Jul23348800145
Aug9610400119
Sep23530058
Oct049900103
Nov02680070
Dec00340301335
Total761371113754373026