*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002015831603
Feb0059946331236
Mar1588100887
Apr01791900936
May91623290001922
Jun401353443001836
Jul252241098001347
Aug751101001113
Sep0099800998
Oct0167400675
Nov0170200703
Dec00406319192328
Total823229811127413515584