*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00011709720
Feb002221249472
Mar0844600454
Apr1642300430
May72870800743
Jun279578900911
Jul421230100355
Aug19431900342
Sep8345600467
Oct1047300474
Nov2142500428
Dec0018428621048
Total10715747461418206844