*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000283283
Feb00721104177
Mar0114000141
Apr11054300554
May152293900976
Jun153068700732
Jul233750500565
Aug26757000603
Sep4087600880
Oct0025000250
Nov0013600136
Dec10762391470
Total85107479437785767