*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan651300078
Feb160032048
Mar0011070108
Apr00112720148
May001113435823727
Jun00613151252012896
Jul002334464886855
Aug001415117182
Sep0011636170
Oct00092193
Nov00040040
Dec27710190297
Total3581411215242263424642