*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0007233240
Feb002405074
Mar04520056
Apr225970200963
May102568569003147
Jun1431212403005538
Jul111371179001327
Aug4246000466
Sep1427900284
Oct0125900260
Nov00680068
Dec00423534579
Total42609660371081713002