*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003360566089
Feb853120192021804335
Mar643814151004875
Apr9801022936004018
May837783433004348
Jun591933204003888
Jul218332950003201
Aug74122336002422
Sep1031779001792
Oct232092002097
Nov222503002507
Dec101567637685342
Total344343828970591200444914