*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00006060
Feb012001637
Mar00880088
Apr0122300224
May32983300334
Jun75544600607
Jul3114037100542
Aug32118300216
Sep2026700269
Oct0014900149
Nov00320032
Dec00231104128
Total75995143511802686