*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan10543012871372
Feb23234177395865
Mar184281012001224
Apr37667668001111
May26249694011006
Jun1956452700786
Jul682351700608
Aug9437800391
Sep4234700353
Oct1161900621
Nov2282411830
Dec00455611731634
Total1125263651244285710801