*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan10403012841355
Feb23234107392855
Mar17828974001180
Apr37365667001105
May26249694011006
Jun1956452700786
Jul682351300604
Aug9437800391
Sep4234700353
Oct1161700619
Nov2282410829
Dec00443611731622
Total1116261643444285010705