*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003451454
Feb101540123278
Mar1042400425
Apr161966001973
May201242676002820
Jun1521651672001989
Jul1061782300946
Aug28679800832
Sep0287900881
Oct111039001041
Nov0070200702
Dec001520567719
Total310321112853114113060