*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00013917930
Feb013704382757
Mar2221547001571
Apr3412262002306
May166403146006565
Jun79198102380020127
Jul55864325060011204
Aug29211319001369
Sep151487001493
Oct011341001342
Nov0057200572
Dec0124719531202
Total185349481203518225249438