*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005830835
Feb122163261483
Mar0957500584
Apr2361029001067
May16491401001466
Jun29581065001152
Jul711355900643
Aug70658500661
Sep40657000616
Oct9248900500
Nov1238200385
Dec001871734922
Total2391837058918259314