*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001522152230
Feb0290838551768
Mar261557001565
Apr6221423001451
May183135256003409
Jun504306297004653
Jul283732160002561
Aug9101641001660
Sep2395400959
Oct0078300783
Nov0170500706
Dec00530221302662
Total11578581121420520024407