*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan41202045
Feb60015021
Mar00582188
Apr0032702275
May00442794525
Jun002850687621
Jul004415011205
Aug00141222138
Sep0011460147
Oct0001660166
Nov00084084
Dec16800190187
Total21529919891972502