*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001420062020
Feb0051915771097
Mar0321014001046
Apr028987001015
May32807135002945
Jun276333163006523
Jul201810990002820
Aug20852900557
Sep3678700796
Oct001072001072
Nov011066001067
Dec01584418972486
Total7311026784619448023444