*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00006060
Feb011901636
Mar00870087
Apr0122300224
May32983300334
Jun75544600607
Jul3114037000541
Aug32118100214
Sep2026700269
Oct0014800148
Nov00300030
Dec00221105128
Total75995142611812678