*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004724728
Feb002550287542
Mar1247900482
Apr11443200447
May77687100846
Jun161224104001344
Jul1430360600923
Aug0565500660
Sep0059000590
Oct0043600436
Nov0032200322
Dec0016309521115
Total3923164113419638435