*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000136578
Feb003201648
Mar1010700108
Apr12012700148
May113582138003731
Jun62125333150012910
Jul236488344006855
Aug141715300184
Sep1616300170
Oct01920093
Nov00400040
Dec00191277297
Total1132264715301435824662