*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001222223
Feb1078072151
Mar411151001156
Apr261396001404
May1981875001902
Jun78362767002881
Jul1571405001427
Aug1183700839
Sep2073300735
Oct0072700727
Nov0034800348
Dec00590199258
Total1225911376149312051