*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001612141230
Feb014067493907
Mar1232806002830
Apr6845628005718
May991506510190016183
Jun3113432514210036057
Jul260805985150016834
Aug78544203004335
Sep5113158003174
Oct001560001560
Nov0043000430
Dec00282013931675
Total760576222942823310090933