*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00013917930
Feb013704382757
Mar2221547001571
Apr3402262002305
May166403146006565
Jun79198102380020127
Jul55864325060011204
Aug29211319001369
Sep151486001492
Oct011337001338
Nov0057200572
Dec0124719531202
Total185349471203018225249432