*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001464465
Feb011790277457
Mar0467600680
Apr2466400670
May19762100647
Jun362237700435
Jul54527300332
Aug32225500289
Sep84136200447
Oct1026100262
Nov4034100345
Dec00930303396
Total232464102110445425