*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00011710721
Feb002191250470
Mar0844400452
Apr1641700424
May72870500740
Jun279578400906
Jul421229800352
Aug19431500338
Sep8345300464
Oct1046800469
Nov2141600419
Dec0018428671053
Total10715747031418276808