*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001222223
Feb1078072151
Mar411155001160
Apr261399001407
May1981876001903
Jun78362771002885
Jul1571406001428
Aug1183900841
Sep2073400736
Oct0072800728
Nov0034800348
Dec00590199258
Total1225911393149312068