*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003486489
Feb111680193363
Mar0729300300
Apr04890093
May0115700122
Jun05632600589
Jul335436000717
Aug3622600235
Sep0112900130
Oct0118500186
Nov0035300353
Dec101362542681
Total810521972512214258