*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000000
Feb001012
Mar1225700260
Apr19242384002427
May797148768007995
Jun1889025785009998
Jul9612523518004866
Aug1051102001117
Sep00590059
Oct003003
Nov000000
Dec000000
Total3931745688770126727