*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000237237
Feb0086081167
Mar211199001202
Apr261519001527
May1582120002143
Jun80363147003263
Jul1461615001635
Aug311108001112
Sep2095700959
Oct0091300913
Nov0050900509
Dec00930277370
Total1185813266059514037