*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00011709720
Feb002221248471
Mar0844600454
Apr1642300430
May72870800743
Jun279578900911
Jul421230100355
Aug19431900342
Sep8345400465
Oct1047200473
Nov2142500428
Dec0018428621048
Total10715747431418196840