*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0012218661889
Feb58712127451482
Mar95541818001967
Apr3341151474001923
May283951542001920
Jun3071561794002257
Jul253881942002283
Aug25211083001129
Sep551109001119
Oct301075001078
Nov1055400555
Dec00465214011868
Total13115421356936401219470