*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001612141230
Feb014067493907
Mar1232808002832
Apr6845635005725
May991506510190016183
Jun3113433914210036071
Jul260805985170016836
Aug78544203004335
Sep5113159003175
Oct001560001560
Nov0043000430
Dec00282013931675
Total760576362944023310090959