*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003104107
Feb112303055
Mar374135200430
Apr1287044500643
May19471750001015
Jun2861411175001602
Jul1285670600890
Aug194163000690
Sep2544700454
Oct0022100221
Nov00420042
Dec001807290
Total795426480932066239