*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000237237
Feb0086081167
Mar211192001195
Apr261512001520
May1582107002130
Jun80363142003258
Jul1461612001632
Aug311095001099
Sep2095000952
Oct0090500905
Nov0049900499
Dec00930277370
Total1185813193059513964