*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00013872885
Feb012150289505
Mar02181000831
Apr3532292002348
May151073201003323
Jun222943919004235
Jul17731697001787
Aug981336001353
Sep371629001639
Oct111126001128
Nov0062300623
Dec00319211411462
Total705651716715230220119