*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002314001423
Feb003809390779
Mar071014001021
Apr2461779001827
May102980718003708
Jun2733743200006601
Jul29286799001114
Aug14243800454
Sep3561300621
Oct1167400676
Nov0253200534
Dec00295514731773
Total8667031044237326320531