*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003716891726
Feb1265376241287
Mar4421054001100
Apr311487900996
May145216176005406
Jun54123653960012815
Jul3540112456006502
Aug12271495001534
Sep171176001184
Oct0083300833
Nov0160500606
Dec00303214281733
Total124217851002646374135722