*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00049195
Feb013122155
Mar05470052
Apr02411100135
May650523100742
Jun61064282001352
Jul744516000612
Aug11511500131
Sep0510100106
Oct01680069
Nov00490049
Dec00250370395
Total202065122064823793