*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00013916929
Feb013704382757
Mar2221539001563
Apr3402257002300
May166403145006564
Jun79198102340020123
Jul55864325030011201
Aug29211315001365
Sep151486001492
Oct011336001337
Nov0057200572
Dec0124719531202
Total185349471200418225149405