*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00008282
Feb004104586
Mar0641176001240
Apr42503738003992
May25114599210012405
Jun613591019550037926
Jul3838353614007487
Aug12261417001455
Sep0111257001268
Oct1065300654
Nov00580058
Dec10200224245
Total1425155514850035166898