*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004826830
Feb002471282530
Mar11237700390
Apr251637100412
May723443200538
Jun1667162200859
Jul1043474600884
Aug41174400759
Sep1057700578
Oct0037700377
Nov0039000390
Dec0026138881152
Total3731785144819967699