*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004826830
Feb002471282530
Mar11237700390
Apr261637100413
May733443200539
Jun1667162200859
Jul1043474600884
Aug41174500760
Sep1057700578
Oct0037800378
Nov0039000390
Dec0026138891153
Total3751785146819977704