*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003360856118
Feb552819432021934239
Mar529734172004774
Apr848962926003870
May691703420004181
Jun479803196003755
Jul200282978003206
Aug6942321002394
Sep1031754001767
Oct222064002068
Nov212470002473
Dec101550637825339
Total288638528794591206044184