*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002416871711
Feb01059956521266
Mar0281120001148
Apr8421143001193
May161989212002217
Jun221955231002208
Jul1784995001096
Aug4466400672
Sep1260900612
Oct0160400605
Nov0057600576
Dec00361514881854
Total684115711434382715158