*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001033783388
Feb27923511622099
Mar70642743002877
Apr239804055004374
May2421015416005759
Jun2353757153007763
Jul1261674682004975
Aug27203348003395
Sep6103305003321
Oct212016002019
Nov101272001273
Dec108301022723113
Total9518253574325681244356