*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00011578589
Feb001631196360
Mar0834200350
Apr1631400321
May72255500584
Jun249562900748
Jul361225100299
Aug14323300250
Sep8331600327
Oct1032400325
Nov2126400267
Dec001162736854
Total9315035071415105274