*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001212
Feb003047
Mar00210021
Apr3171006001026
May102939589003538
Jun443297590003931
Jul32244989001265
Aug7369400704
Sep0128100282
Oct00450045
Nov2090011
Dec00501722
Total986501423203310864