*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0008129137
Feb002815382
Mar0644700111
Apr33610067
May9963114001086
Jun112281399002691
Jul31236465001704
Aug11426800283
Sep0219800200
Oct00850085
Nov00590059
Dec00442504550
Total2745631768116867055