*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000237237
Feb0086081167
Mar211199001202
Apr261516001524
May1582107002130
Jun80363142003258
Jul1461612001632
Aug311096001100
Sep2095100953
Oct0090500905
Nov0050000500
Dec00930277370
Total1185813207059513978