*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003622625
Feb001871225413
Mar01234200354
Apr0815200160
May04644500509
Jun10148149001540
Jul9545453001007
Aug5743400446
Sep0038700387
Oct0046500465
Nov0045900459
Dec0021718771095
Total2425173190517247460