*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000136578
Feb003201648
Mar1010700108
Apr12012700148
May113582134003727
Jun61125203150012896
Jul236488344006855
Aug141715100182
Sep1616300170
Oct01920093
Nov00400040
Dec00191277297
Total1122263415241435824642