*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002420512075
Feb01076457791558
Mar0281389001417
Apr8421404001454
May162584213002813
Jun222469231002722
Jul182621107001387
Aug551015001025
Sep1293800941
Oct0188600887
Nov0080800808
Dec00511519812497
Total705403926634481119584