*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0230104109
Feb002212447
Mar38145900111
Apr993726400400
May1152254800685
Jun10648911001065
Jul652057800663
Aug17741600440
Sep0020000200
Oct00560056
Nov00310031
Dec10330403437
Total441150312115314244