*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001465466
Feb021630281446
Mar0458900593
Apr2456800574
May23552700555
Jun362436700427
Jul47724600300
Aug30424800282
Sep84137800463
Oct1027500276
Nov4040200406
Dec001080370478
Total227513871111165266