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*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0025119126
Feb002723867
Mar0385254003906
Apr3942142001087
May914820200359
Jun3018326800481
Jul23348800145
Aug9710400120
Sep23560061
Oct059900104
Nov02680070
Dec00340384418
Total765176114475416944