*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004520602105
Feb0482437181549
Mar3701379001452
Apr91871151001347
May202674260002954
Jun483613311003972
Jul28941978002100
Aug891128001145
Sep3363900645
Oct0058700587
Nov0154700548
Dec00382217092093
Total1196655918650448720497