*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001033783388
Feb27923511612098
Mar70642732002866
Apr239804045004364
May2411015410005752
Jun2353757152007762
Jul1261664671004963
Aug27203337003384
Sep6103295003311
Oct212015002018
Nov101272001273
Dec108301022673108
Total9508243568225680644287