*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00013835848
Feb042401257502
Mar03745900496
Apr39455000647
May6967166001139
Jun2515511313002889
Jul30801197001307
Aug8565100664
Sep1565100657
Oct1040400405
Nov0034700347
Dec00166111251292
Total742743614415221711193