*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004396400
Feb001194158281
Mar03726700304
Apr736947500851
May1243131500758
Jun4252640500973
Jul446625800368
Aug14932500348
Sep3337500381
Oct0533900344
Nov0233200334
Dec001050529634
Total12214483315810835976