*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004520602105
Feb0482937201556
Mar3701384001457
Apr91871162001358
May202675265002960
Jun483613311003972
Jul28941979002101
Aug891128001145
Sep3363900645
Oct0058700587
Nov0154700548
Dec00382217092093
Total1196656921350448920527